Herbert Hoover actually said...
By virtue of the power and authority vested in me by 'An Act to define, regulate and punish trading with the enemy, and for other purposes', known as the 'Trading with the Enemy Act', approved October 6, 1917, and amendments thereto, I hereby make the following order, rule and regulation.
Context
Executive Order 5113-A—Delegating Further Authority to the Alien Property Custodian Under the Trading with the Enemy Act
05/13/1929