the United States Congress, Acts of the 73rd United States Congress…
“ Now therefore be it Resolved by the Senate and House of Representatives of the United States of America in Congress assembled, That (a) every provision contained in or made with respect to any obligation which purports to give the obligee a right to require payment in gold or a particular kind of coin or currency, or in an amount in money of the United States measured thereby, is declared to be against public policy; and no such provision shall be contained in or made with respect to any obligation hereafter incurred. ”
