Franklin Roosevelt actually said...

In carrying out this Order, the Rubber Director may direct the Rubber Reserve Company and other subsidiaries of the Re-construction Finance ...

By virtue of the authority vested in me by the First War Powers Act, 1941, and for the purpose of enabling the Chairman of the War Manpower ...

Nothing herein shall be construed to limit the powers conferred upon the Price Administrator by the 'Emergency Price Control Act of 1942.'

After all, parity is, by its very definition, a fair relationship between the prices of the things farmers sell and the things they buy.