7 U.S.C. § 1512: Corporation as fiscal agent of Government

When designated for that purpose by the Secretary of the Treasury, the Corporation shall be a depository of public money, except receipts from customs, under such regulations as may be prescribed by said Secretary; and it may also be employed as a financial agent of the Government; and it shall perform all such reasonable duties, as a depository of public money and financial agent of the Government, as may be required of it.