No officer, employee, department, or agency of the United States shall set off against, or otherwise withhold from, any veteran or the surviving spouse of any veteran any payments (other than benefit payments under any law administered by the Department of Veterans Affairs) which such veteran or surviving spouse would otherwise be entitled to receive because of any liability to the Secretary allegedly arising out of any loan made to, assumed by, or guaranteed or insured on account of, such veteran or surviving spouse under this chapter, unless the Secretary provides such veteran or surviving spouse with notice by certified mail with return receipt requested of the authority of the Secretary to waive the payment of indebtedness under
section 5302(b) of this title.