The Buy America Act typically applies only to mass-transit procurements for state and local government projects, such as the construction of highways, railways, or rapid transit systems. The requirements of this statute are regulated by the Federal Transit Administration (FTA) and the Federal Highway administration (FHWA). Under the Buy America Act, end products must be 100% manufactured in the United States and all steel and iron components MUST be mined, melted, and manufactured in the United States. However, there is one important exception; foreign-sourced materials may be allowed if they are valued at $2,500 or 0.1% (whichever is greater) of the contract value. This is referred to as the minimal use amount.