Message to Congress on a State of War Between the United States and Hungary, Rumania, and Bulgaria.
To the Congress:
The Governments of Bulgaria, Hungary, and Rumania have declared war against the United States. I realize that the three Governments took this action not upon their own initiative or in response to the wishes of their own peoples but as the instruments of Hitler. These three Governments are now engaged in military activities directed against the United Nations and are planning an extension of these activities.
Therefore, I recommend that the Congress recognize a state of war between the United States and Bulgaria, between the United States and Hungary, and between the United States and Rumania.
Franklin D. Roosevelt, Message to Congress on a State of War Between the United States and Hungary, Rumania, and Bulgaria. Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/210660