The Berry Amendment (USC, Title 10, Section 2533a), requires the Department of Defense to give preference in procurement to domestically produced, manufactured, or home grown products, most notably food, clothing, fabrics, and specialty metals. Congress originally passed domestic source restrictions as part of the 1941 Fifth Supplemental DOD Appropriations Act in order to protect the domestic industrial base in the time of war. The Defense Federal Acquisition Regulation Supplement (DFARS) was amended to include exceptions for the acquisition of food, specialty metals, and hand or measuring tools when needed to support contingency operations or when the use of other-than-competitive procedures is based on an unusual and compelling urgency. The specialty metals provision was added in 1973. This provision requires that specialty metals incorporated in products delivered under DOD contracts to be melted in the United States or a “qualifying country”. Specialty metals include certain steel, titanium, zirconium and other metal alloys that are important to the DOD.

The Historically Underutilized Business Zones (HUBZone) program helps small businesses in urban and rural communities gain preferential access to federal procurement opportunities. These preferences go to small businesses that obtain HUBZone certification in part by employing staff who live in a HUBZone. The company must also maintain a "principal office" in one of these specially designated areas.