All moneys of the Administration not otherwise employed may be deposited with the Treasury of the United States subject to check by authority of the Administration. The Federal Reserve banks are authorized and directed to act as depositaries, custodians, and fiscal agents for the Administration in the general performance of its powers conferred by this chapter. Any banks insured by the Federal Deposit Insurance Corporation, when designated by the Secretary of the Treasury, shall act as custodians and financial agents for the Administration. Each Federal Reserve bank, when designated by the Administrator as fiscal agent for the Administration, shall be entitled to be reimbursed for all expenses incurred as such fiscal agent.