What is the Berry Amendment? Also called the Berry Act.
The Berry Amendment requires the department of defense to buy items that are manufactured in the United states of America. It is part of United States code, title 10 section 2533a
The code is fairly complex, however a certification is required from the manufacturer supplying material to DOD, therefore all companies in the supply chain must also certify that the product they supply is made in the USA. There is an ongoing debate in Congress to various items in the act.
The Berry Act should not be confused with the Buy American act. It is a separate and not directly related to the Berry Act.