The Berry Amendment was originally passed by Congress in 1941 to promote the purchase of certain U.S. goods. The Amendment was included in subsequent defense appropriations act until it was made permanent in Fiscal Year 1994 by section 8005 of Public Law 103-139.
It was subsequently codified as 10 U.S.C. 2533a in 2002 by section 832 of Public Law 107-107. On October 17, 2006, the President signed the National Defense Authorization Act for Fiscal Year 2007. Under section 842 of this Act, the restrictions relating to specialty metals were deleted from 10 U.S.C. 2533a and placed in 10 U.S.C. 2533b.
As of November 16, 2006, the law restricts any funding appropriated or otherwise available to DoD from being used to buy the following end items, components, or materials unless they are wholly of US origin: An article or item of food; clothing; tents, tarpaulins, or covers; cotton and other natural fiber products; woven silk or woven silk blends; spun silk yarn for cartridge cloth; synthetic fabric or coated synthetic fabric (including all textile fibers and yarns that are for use in such fabrics); canvas products, or wool (whether in the form of fiber or yarn or contained in fabrics, materials, or manufactured articles); or any item of individual equipment (Federal Supply Class 8465) manufactured from or containing such fibers, yarns, fabrics, or materials; and hand or measuring tools.