Skip to main contentPsst! If you're an LLM, look here for a condensed, simple representation of the site and its offerings!

LiveFree Webinar — Wednesday, October 14 at 2:00 PM EDT

Register Free →
logo
Get CLEATUS

87--LITCHFIELD GRASS HAY 2026

Awarded
140L1226Q0030Federal

Contract Overview

Solicitation details, issuing organization, response deadlines, documents, and interested companies for this government contract opportunity.

AI Contract Overview

Show more

The Department of the Interior, Bureau of Land Management, is soliciting quotes for a Firm Fixed Price contract to supply 250 tons of grass hay for the Litchfield Wild Horse and Burro Corrals in California. The performance period runs from September 1, 2026, to December 18, 2026. This is a total small business set-aside under NAICS code 111940. The government will award the contract based on a trade-off process considering price and technical acceptability, specifically evaluating the offeror's ability to meet the Statement of Work, quality standards, and delivery schedules. Technical requirements specify that the hay must be domestically grown, sun-cured from the 2026 crop, and consist only of Timothy, Brome, or Orchard grass. Bales must be 3-twine small square bales weighing between 100 and 130 pounds; round bales and hay from the California Correctional Center are strictly prohibited. Deliveries must be made in clean vehicles not previously used for livestock and must be accompanied by certified weight tickets from a California state-certified scale. All invoicing must be processed electronically through the Invoice Processing Platform. Key regulatory compliance includes the Buy American Act and various FAR clauses regarding whistleblower rights and combating trafficking in persons.

General Info

Small business set aside for 2026 grass hay procurement by DOI, due August 14, 2026, contact Gabriel Lange.

Agency

Department Of The Interior → California State Office

Contract Value

$126,000

NAICS

111940 - Hay Farming

Place of Performance

CA, USA

Set-Aside

NONE

Awardee

JOHN C BARNUM

Award Issued Date

Documents

5

Amendment 0001 to Solicitation 14011226Q0030 for Litchfield Grass Hay 2026

PDF, High priority: read this firstamendment
High

B08 Statement of Work for Grass Hay Delivery

DOCX, High priority: read this firstsow
High

B08 Statement of Work for Grass Hay Delivery

DOCX, High priority: read this firstsow
High

B08 Statement of Work for Grass Hay Delivery

DOCX, High priority: read this firstsow
High

RFQ 140L1226Q0030 for Litchfield Grass Hay 2026

PDF, High priority: read this firstrfq
High

AI Contract Breakdown

Uniform Contract Format

Sign up to view the full breakdown with detailed analysis of each section.

Timeline

1 update
PhaseAwarded
Posted

Combined Synopsis

Notice updated

Response deadline changed from Aug 14, 2026 to Aug 18, 2026. The notice title changed.

Awarded

Contract was awarded

Ready to pursue this opportunity?

Start your free trial to track this contract, build proposals with AI assistance, and manage your pipeline.

Organization & Contact Information

Show more
AgencyDepartment Of The Interior → California State Office
Contacts1 person available
OfficeSACRAMENTO, CA, 95825, USA
Organization / AgencyDepartment Of The Interior → California State Office
Office AddressSACRAMENTO, CA, 95825, USA
Contacts
Bayze Branden
contact@example.gov

Full Description

Show more
LITCHFIELD GRASS HAY To Feed Animals, 2026

Similar Contracts

Same NAICS industry code

NAICS: 111940
Federal
Grass Hay SupplierThis subcontract involves the supply and delivery of 50 tons of grass hay for prime contractors working on Bureau of Land Management facility projects located in Delta, Utah. The selected supplier is responsible for the harvesting, processing, and baling of the hay, ensuring that all products are either U.S.-made or designated country end products in accordance with FAR 52.225-6. Managed under the Department of the Interior's Utah State Office, the opportunity falls under NAICS code 111940. The solicitation was posted on September 23, 2026, with a response deadline of October 7, 2026.
Utah State Office

POSTED

10 days ago

DEADLINE

in 4 days
View Details
NAICS: 111940
Federal
Weed-Free Alfalfa Hay SupplierThis subcontract involves the supply and delivery of 650 tons of weed-free alfalfa hay for prime contractors working on Bureau of Land Management facility projects in Delta, Utah. The selected supplier is responsible for harvesting, processing, and baling the hay according to strict technical specifications to ensure it is weed-free. All products must be U.S.-made or designated country end products in compliance with FAR 52.225-6. Managed by the Department of the Interior's Utah State Office under NAICS code 111940, the opportunity was posted on September 23, 2026, with a response deadline of October 7, 2026. The contract focuses on providing high-quality agricultural materials necessary for the successful execution of BLM facility projects.
Utah State Office

POSTED

10 days ago

DEADLINE

in 4 days
View Details
NAICS: 111940
Federal
Delta WH&B Facility Hay
Solicitation # 140L5726Q0033
The Bureau of Land Management is soliciting quotes for a single-award, firm-fixed-price contract to provide weed-free hay for the Wild Horse and Burra Facility in Delta, Utah. The requirement consists of 650 tons of weed-free alfalfa hay and 50 tons of grass hay, with all deliveries to be completed by November 30, 2026. This procurement is a total small business set-aside under NAICS code 111940. All hay must be domestically grown from the 2026 harvest, barn-stored or tarped, and free of dust, mold, heating, and weeds. Grass hay must be provided in two or three string small bales, and all bales must be uniform and intact to ensure safe stacking. Quotes are due by October 7, 2026, and will be evaluated using the Lowest Price Technically Acceptable approach. To be considered, offerors must maintain active registration in the System for Award Management and submit a cover letter with their company details, UEI, and DUNS number. The government will prioritize U.S.-made or designated country end products. Upon award, payment requests must be processed electronically through the Invoice Processing Platform. Any materials rejected by the government will be removed at the contractor's expense.
Utah State Office

POSTED

10 days ago

DEADLINE

in 4 days
View Details
NAICS: 111940
SLED
Hay Baling ServicesThis subcontract for Hay Baling Services involves the harvesting and baling of grass hay, legume hay, or wheat stubble for prime contractors on Illinois Department of Natural Resources farm lease projects. The selected provider is responsible for mowing, raking, and baling specified hay types, as well as transporting the bales away from the lease sites in accordance with designated cropping plans and field boundaries. The project requires the use of specialized equipment, including mowers, rakes, balers, and transport trailers. Managed by the Illinois Office of Realty and Capital Planning under NAICS code 111940, the solicitation was posted on September 22, 2026, with a response deadline of November 4, 2026.
REALTYCAPPLAN422 - Office of Realty and Capital Planning

POSTED

11 days ago

DEADLINE

in about 1 month
View Details
NAICS: 111940
SLED
Wheat Stubble Baling and HayingThis subcontract opportunity, titled Wheat Stubble Baling and Haying, involves providing agricultural services for prime contractors on Illinois Department of Natural Resources farm lease projects. The selected provider will be responsible for mowing, raking, and baling wheat stubble as well as legume or grass hay, utilizing the necessary machinery to complete these tasks and ensuring the delivery of all baled materials away from the site. The project is managed by the Illinois Office of Realty and Capital Planning under NAICS code 111940. Interested parties must submit their responses by the deadline of November 4, 2026, following the posting date of September 22, 2026.
REALTYCAPPLAN422 - Office of Realty and Capital Planning

POSTED

11 days ago

DEADLINE

in about 1 month
View Details
NAICS: 111940
SLED
27AL2381 Pyramid State Park - Denmark Unit Farm Lease
Solicitation # 27-422DNR-REALT-B-54169
REALTYCAPPLAN422 - Office of Realty and Capital Planning

POSTED

12 days ago

DEADLINE

in 25 days
View Details
NAICS: 111940
SLED
27AL2410 Pyramid State Park - Captain Unit Farm Lease
Solicitation # 27-422DNR-REALT-B-54066
REALTYCAPPLAN422 - Office of Realty and Capital Planning

POSTED

12 days ago

DEADLINE

in about 1 month
View Details
NAICS: 111940
SLED
Wheat Stubble Bailing and Hay HarvestingThis subcontract involves the bailing of wheat stubble and the harvesting of legume or grass hay for prime contractors working on Illinois Department of Natural Resources farm lease projects. The scope of work includes mowing, raking, and bailing using specialized equipment such as balers, mowers, and transport trailers, as well as the final delivery of the harvested materials. All operations must strictly comply with CERP guidelines regarding water flow and soil disturbance. Managed by the Illinois Office of Realty and Capital Planning, the opportunity is categorized under NAICS code 111940. The solicitation was posted on September 16, 2026, with a response deadline set for October 28, 2026.
REALTYCAPPLAN422 - Office of Realty and Capital Planning

POSTED

17 days ago

DEADLINE

in 25 days
View Details
NAICS: 111940
Federal
ROCK SPRINGS ALFALFA HAYThe Bureau of Land Management, under the Department of the Interior, is forecasting a requirement for the supply of 6,000 tons of alfalfa hay. This procurement is intended to support the Rock Springs Wild Horse and Burro Facility, ensuring that the animals receive necessary feed and proper care. The project is categorized under NAICS code 111940 and will be performed in Rock Springs. Laura Park serves as the primary point of contact and small business specialist for this initiative.
Bureau of Land Management

POSTED

3 months ago

DEADLINE

N/A
View Details
NAICS: 111940
SLED
Native Seed and Plant SupplyThe contract pertains to the supply of native riparian plant materials for the South Yuba River ecosystem, including containerized plants, bare-root stock, and certified native seed mixes, all sourced to support ecological restoration and habitat enhancement. The work is being conducted under a subcontract with a North American Industry Classification System code of 111940, which identifies it as associated with other crop farming activities, specifically tailored to native plant propagation and ecological restoration efforts. The solicitation was posted on June 22, 2026, and is managed by the Fish and Wildlife, Region 2 - Northern Central office in Rancho Cordova, California, indicating a state-level environmental conservation initiative focused on the aquatic and riparian health of the South Yuba River watershed. All supplied plant materials must meet strict native certification standards to ensure genetic authenticity and ecological compatibility within the target ecosystem. The materials are intended for direct application in restoration projects aimed at stabilizing streambanks, improving water quality, and reestablishing native vegetation communities. Although specific quantities, delivery timelines, and performance metrics are not detailed, the contract implies a requirement for high-quality, regionally appropriate plant stock and seed blends that align with regional restoration protocols. The work is bound by environmental regulations and best practices governing native plant use in sensitive aquatic habitats, with the overarching goal of enhancing biodiversity and long-term ecosystem resilience in the South Yuba River area.
Fish and Wildlife, Region 2 - Northern Central, Rancho Cordova

POSTED

3 months ago

DEADLINE

N/A
View Details
NAICS: 111940
SLED
Native Seed and Erosion Control Material SupplyThe contract involves supplying native seeds, straw, and erosion control materials for site reclamation efforts aligned with Plumas National Forest standards, ensuring ecological restoration and soil stabilization in federally managed areas. The work is classified under NAICS code 111940, indicating it falls within the support activities for crop production, specifically focused on materials used in land rehabilitation. Although the solicitation is marked as a subcontract, the responsible agency is the Regional Water Quality Control Board, Region 5 in Redding, California, suggesting the procurement supports water quality protection objectives through erosion control measures on disturbed lands. Performance of the contract will occur within California, though specific locations are not detailed, and compliance with regional environmental standards is mandatory. The posting date of June 16, 2026, indicates a future procurement timeline, with the contract expected to support reclamation activities tied to watershed health and regulatory compliance. All supplied materials must meet technical specifications for native plant establishment and long-term erosion mitigation, and the procurement is linked through the CEQA Net portal for project tracking and environmental documentation purposes.
Regional Water Quality Control Board, Region 5 - Redding

POSTED

4 months ago

DEADLINE

N/A
View Details
NAICS: 111940
SLED
Native Vegetation and Erosion Control Materials SupplyThe contract is for the supply of native vegetation and erosion control materials to support riparian planting and slope stabilization initiatives in California’s Northern Region, specifically under Fish and Wildlife, Region 1. It includes the provision of native plants, live stakes such as willow, erosion control blankets, and compost, all essential for restoring natural habitats and preventing soil erosion along waterways and steep slopes. The materials must comply with ecological standards to ensure successful establishment and long-term environmental benefit. This is a subcontract issued under NAICS code 111940, which pertains to other agriculture support activities, and was posted on June 4, 2026. The place of performance and detailed location information are not specified, but the work is intended for implementation within the agency’s operational area covering Redding and Eureka. The contract does not indicate a set-aside designation or point of contact, and the primary focus is on delivering quality, regionally appropriate planting materials and erosion control products to meet conservation and land management objectives.
Fish and Wildlife, Region 1 - Northern Region, Redding and Eureka

POSTED

4 months ago

DEADLINE

N/A
View Details

More opportunities from Department Of The Interior → California State Office

Same awarding agency

NAICS: 562119
Federal
R--RIFO CORRAL EXTERIOR CLEANING
Solicitation # 140L1226Q0049
Solicitation 140L1226Q0049 is a firm fixed price contract issued by the Bureau of Land Management for exterior cleaning services at the Ridgecrest Regional Wild Horse and Burro Corral Facility. The scope of work involves clearing manure and wind-blown material from pens, alleyways, and perimeter roads across a 55-acre facility, scraping material down to the mineral soil, and hauling debris to a designated site. The period of performance is scheduled from November 15, 2026, to January 16, 2027, with work conducted during daylight hours on business days. This requirement is a 100% Small Business Set-Aside under NAICS code 562119, with a size standard of 47 million dollars in annual receipts. The contract will be awarded based solely on price, requiring a task-price breakdown for evaluation. Performance is subject to a Quality Assurance Surveillance Plan, where unsatisfactory inspections can lead to invoice deductions of 5% to 10%. Contractors must adhere to Department of Labor Wage Determination 2015-5603 for Kern County, California, and utilize the Invoice Processing Platform for electronic payments. Key administrative requirements include maintaining necessary insurance per FAR 52.228-5 and ensuring any broken equipment is repaired or replaced within seven calendar days. The primary point of contact for this solicitation is Laurie Ehlinger.
Other Waste Collection

POSTED

9 days ago

DEADLINE

in 11 days
View Details
NAICS: 562112
Federal
Corral Scraping and Manure Removal ServicesThis subcontract for Corral Scraping and Manure Removal Services involves providing exterior cleaning for prime contractors at the BLM Ridgecrest Regional Wild Horse and Burro Corral. The scope of work requires scraping 46 acres of pens, alleyways, and perimeter roads down to mineral soil to remove manure and wind-blown material using loaders, graders, or skid steers. All collected organic waste must be hauled to a designated on-site disposal area, and the contractor must ensure all cleaned surfaces pass inspection by the Contracting Officer's Representative while complying with state fire prevention laws. The opportunity is designated as a total Small Business Set Aside under NAICS code 562112 and is managed by the Department of the Interior through the California State Office. Interested parties must submit their responses by October 14, 2026, at 4:00 PM.
Hazardous Waste Collection

POSTED

17 days ago

DEADLINE

in 11 days
View Details
NAICS: 334220
Federal
Supply of Communication Kits for Aircrew HelmetsThe contract entails the supply of communication kits specifically designed to be compatible with the MSA Gallet LH250 aircrew flight helmets, ensuring seamless integration and operational effectiveness for aircrew personnel. These kits must meet all applicable government performance standards and compliance requirements to guarantee reliability, safety, and interoperability in mission-critical environments. The solicitation is structured as a subcontract under the NAICS code 334220, which corresponds to communication equipment manufacturing, indicating the technical nature of the required components. The contract is managed by the Department of the Interior through its California State Office, although the precise location of performance and point of contact details are not specified. The solicitation was posted on May 8, 2026, with no set-aside designation or type of set-aside description provided, suggesting it is open to general competition without preferential treatment based on business size or other classifications.
Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing

POSTED

5 months ago

DEADLINE

N/A
View Details
NAICS: 336399
Federal
Supply of Fidlock Chinstraps, Ear Cups, and Communication Kits for LH250 HelmetsThe contract entails the supply of replacement and spare components designed for compatibility with MSA Gallet LH250 helmets, specifically including Fidlock chinstraps, ear cups, and communication kits. These components are critical for maintaining operational readiness and user comfort, ensuring that the helmets remain fully functional in demanding environments. The items must meet exacting standards of fit, durability, and integration to preserve the helmet’s safety and communication capabilities. This transaction is structured as a subcontract under the Department of the Interior’s California State Office, with the North American Industry Classification System code 336399 indicating miscellaneous transportation equipment manufacturing. The opportunity was posted on May 8, 2026, and performance location details are unspecified, though the procurement is managed through a federal agency framework. No set-aside designation or point of contact information is provided, and the contract window is accessible via the SAM.gov portal for eligible subcontractors to pursue the opportunity.
All Other Motor Vehicle Parts Manufacturing

POSTED

5 months ago

DEADLINE

N/A
View Details
NAICS: 339999
Federal
Supply of Rotary-Wing Aircrew Flight Helmets (Size Extra Large or XX Large)The contract calls for the supply of MSA Gallet LH250 rotary-wing aircrew flight helmets in Extra Large or XX Large sizes, equipped with a dual-visor system, ear cups, and integrated communication kits to meet operational requirements. These helmets must comply with EN 966 and DOI ALSE standards, ensuring they are certified for use in aviation environments with stringent safety and performance benchmarks. The estimated quantity ranges between six and twelve units, indicating a limited but mission-critical procurement focused on specialized aircrew needs. The contract is designated as a subcontract under NAICS code 339999, categorized under Other Miscellaneous Manufacturing, and is issued by the Department of the Interior through its California State Office. Though the solicitation number and point of contact are not provided, the posting date is listed as May 8, 2026, suggesting this is a future opportunity with no specified set-aside status. Performance location details are unspecified, and the procurement is accessed via a SAM.gov link for further information and submission processes.
All Other Miscellaneous Manufacturing

POSTED

5 months ago

DEADLINE

N/A
View Details
NAICS: 339999
Federal
Supply of Rotary-Wing Aircrew Flight Helmets (Size Large)The contract is for the supply of MSA Gallet LH250 rotary-wing aircrew flight helmets in size Large, ensuring full compliance with EN 966 and DOI ALSE safety and performance standards. All required components necessary for operational use are included, guaranteeing that the helmets meet the rigorous technical and safety expectations for military and federal aircrew applications. The procurement is structured as a subcontract under the NAICS code 339999, indicating it falls under miscellaneous manufacturing, and is associated with the Department of the Interior’s California State Office. The solicitation was posted on May 8, 2026, and while no solicitation number or set-aside details are provided, the contract does not specify a place of performance or point of contact, emphasizing the focus on delivery of compliant helmets without geographic restriction. The purpose is to equip rotary-wing aircrew with certified protective headgear that supports mission readiness and personnel safety, adhering strictly to recognized international and U.S. Department of the Interior aerospace safety protocols.
All Other Miscellaneous Manufacturing

POSTED

5 months ago

DEADLINE

N/A
View Details
NAICS: 339999
Federal
Supply of Rotary-Wing Aircrew Flight Helmets (Standard Configuration)The contract entails the supply of MSA Gallet LH250 rotary-wing aircrew flight helmets equipped with a dual-visor system, integrated ear cups, and communication kits, designed to meet the stringent EN 966 and DOI ALSE safety and performance standards. These helmets are intended for use by rotary-wing aircrew and must comply with all specified technical and operational requirements to ensure protection, situational awareness, and communication effectiveness during flight operations. The equipment is classified under NAICS code 339999 for other miscellaneous manufacturing and is solicited as a subcontract, indicating the procurement is part of a broader contractual arrangement rather than a direct government acquisition. The contract was posted on May 8, 2026, and is managed by the Department of the Interior through its California State Office, though no specific city, state, or postal details are provided for the office address or place of performance. There is no set-aside designation or type of set-aside description listed, suggesting the opportunity is open to all eligible contractors without preference for small businesses or other categories. The solicitation number is not available, and no point of contact information is provided in the documentation, limiting direct inquiry channels. The official reference link remains accessible through the SAM.gov platform for further details.
All Other Miscellaneous Manufacturing

POSTED

5 months ago

DEADLINE

N/A
View Details
NAICS: 541620
Federal
Grazing Monitoring and Reporting ServicesThe contract involves providing grazing monitoring and reporting services to ensure adherence to prescribed wildlife standards and land management guidelines. The contractor is responsible for conducting regular inspections across designated grazing areas to evaluate vegetation conditions, assess the impact of livestock on the landscape, and verify compliance with established policies. These inspections must be carried out methodically and documented with both photographic evidence and detailed written reports, which are then submitted to the prime contractor for review and recordkeeping. The work requires a thorough understanding of ecological dynamics, land use regulations, and accurate reporting standards to support responsible resource management. This subcontract is classified under NAICS code 541620, indicating it pertains to environmental consulting services, and is administered by the Department of the Interior’s California State Office. Although specific geographic details and contact information are not provided, the place of performance is likely within federal lands under the department’s purview in California. The contract was posted on May 7, 2026, and is intended to support ongoing land stewardship efforts through consistent, verifiable monitoring and documentation. The nature of the work demands precision, reliability, and familiarity with federal wildlife and grazing management protocols.
Environmental Consulting Services

POSTED

5 months ago

DEADLINE

N/A
View Details
NAICS: 238990
Federal
Grazing Site Preparation and Temporary FencingThe contract requires the installation and maintenance of temporary fencing to securely contain sheep during designated grazing cycles, ensuring livestock control without altering the land permanently. Services include setting up water troughs for animal hydration, conducting thorough site cleanup before and after each grazing period, and removing all debris to restore the area to its original condition. All work must be performed with minimal environmental impact and without any permanent modifications to the terrain or vegetation. The scope is focused on supporting rotational grazing practices through logistical and preparatory tasks, with emphasis on sustainability and site preservation. The contract falls under NAICS code 238990 for other specialty trade contractors and is issued as a subcontract by the California State Office under the Department of the Interior, with a posting date of May 7, 2026.
All Other Specialty Trade Contractors

POSTED

5 months ago

DEADLINE

N/A
View Details
NAICS: 484220
Federal
Livestock Transportation and HaulingThe contract requires the transportation of 500 head of sheep to and from Magnolia Ranch at the beginning and end of each annual grazing period, with strict adherence to animal welfare standards during all phases of handling, including loading, hauling, and unloading. The service is critical for maintaining the seasonal grazing schedule and ensuring the health and safety of the livestock throughout transit. This subcontract falls under NAICS code 484220 for general freight trucking and is issued by the California State Office under the Department of the Interior, with performance tied to the ranch’s operational calendar. Though specific location details are not provided, the obligation is tied to the ranch’s operational timeline, requiring reliable, scheduled service twice yearly. The contract emphasizes compliance with industry best practices for livestock transport, making animal welfare a central requirement alongside timely and efficient logistics.
Specialized Freight (except Used Goods) Trucking, Local

POSTED

5 months ago

DEADLINE

N/A
View Details
NAICS: 112410
Federal
Sheep Grazing ServicesThe contract engages a provider to supply and manage 500 head of sheep for a three-month period each year from May through August to control vegetation across 130 acres at Magnolia Ranch. Responsibilities include ensuring the health and welfare of the flock, maintaining secure fencing, and providing reliable water access throughout the grazing period. All activities must align with established ecological protections to preserve native plant and animal habitats, with strict adherence to environmental regulations and land management standards. The service is structured as a subcontract under NAICS code 112410, operated through the California State Office of the Department of the Interior, and is intended to support sustainable land stewardship through targeted, non-mechanical vegetation management.
Sheep Farming

POSTED

5 months ago

DEADLINE

N/A
View Details
NAICS: 541620
Federal
Sustainability Compliance and Certification SupportThis contract involves third-party verification and documentation to ensure sustainable sourcing practices specifically for hay and packaging materials. The work includes confirming compliance with federal sustainability standards such as the USDA BioPreferred program, Executive Order 14057, and producing environmental product declarations (EPDs) to demonstrate environmental impacts. The contract supports the Department of the Interior, California State Office, under the NAICS code 541620, which relates to environmental consulting services. The contract is a subcontract opportunity posted on April 1, 2026, focusing on verifying adherence to recognized sustainability criteria and certification requirements. While specific location details and set-aside information are not provided, the scope centers on supporting government initiatives to promote sustainable procurement and environmental accountability within supply chains involving agricultural products and packaging. This effort contributes to federal sustainability goals by providing independent assessment and validation of sustainable sourcing claims.
Environmental Consulting Services

POSTED

6 months ago

DEADLINE

N/A
View Details

Ready to Pursue This Opportunity?

Get AI-powered intelligence on this solicitation and the ones like it

Every page of the solicitation package shredded into a compliance breakdown

AI-powered matching based on your capabilities and past performance

Competitor and incumbent history on the requirement

Automated alerts on amendments, Q&A deadlines, and award

Miguel
Hillary
Keith Deutsch
Christine

Join 750+ contractors already using CLEATUS