Depository of public money

When designated for that purpose by the Secretary of the Treasury, a savings association the deposits of which are insured by the Corporation shall be a depository of public money and may be employed as fiscal agent of the Government under such regulations as may be prescribed by the Secretary and shall perform all such reasonable duties as fiscal agent of the Government as may be required of it. A savings association the deposits of which are insured by the Corporation may act as agent for any other instrumentality of the United States when designated for that purpose by such instrumentality, including services in connection with the collection of taxes and other obligations owed the United States, and the Secretary of the Treasury may deposit public money in any such savings association, and shall prescribe such regulations as may be necessary to carry out the purposes of this subsection.