Germany declared war on the US
Uh, yes,
after Pearl Harbor--and after FDR had been trying for months to provoke Germany into fighting the U.S.
The point is that FDR was willing to tell just about any lie to try to inflame public opinion into supporting entrance into the war.
Internal government memos and other evidence indicate that months before the Pearl Harbor attack, Roosevelt and other high officials decided to try to provoke hostilities with Japan in order to overcome the American public’s opposition to entering World War II.
One memo, known as the McCollum Memo, dated 7 October 1940, even detailed a point-by-point plan for doing so, and much of that plan was implemented. Written by Lieutenant Commander Arthur McCollum, the chief of ONI’s Far Eastern Section, the memo noted the lack of public support for entry into the war, and it "therefore" suggested several steps to provoke Japan.
One of the steps was to keep the Pacific Fleet based at Pearl Harbor as a lure. After listing the steps, the memo added that it would be “so much the better” if the steps led Japan to commit an overt act of war:
If by these means Japan could be led to commit an overt act of war, so much the better.
Defenders of the traditional story note that there is no direct evidence that FDR ever saw the McCollum Memo. But we know that Captain Walter Anderson, the director of ONI, received a copy of the memo, and Anderson was one of Roosevelt's most trusted naval advisers and had direct access to FDR.
Furthermore, we know that Admiral Stark, Admiral Turner (the director of the Navy's War Plans Division), and Captain Harold Bode (the chief of ONI's Foreign Intelligence Branch) also received copies of the memo. Needless to say, Stark, as Chief of Naval Operations, met with FDR frequently. So at a minimum, it seems entirely plausible that FDR was made aware of McCollum's memo, especially since it was written by the chief of ONI's Far Eastern Section. Also, Roosevelt carried out many of the actions recommended in the memo.
McCollum's memo is important partly because it reveals the attitude of many senior military officers.
Moreover, the McCollum Memo is not the only written evidence that high officials in FDR’s administration wanted to provoke war with Japan. We also have Secretary of War Henry Stimson’s diary. In talking about a recent meeting at the White House, On 25 November 1941, Stimson wrote that they discussed how they could get Japan to fire “the first shot” without suffering too much damage from that first shot:
Then at 12 o’clock we (General Marshall and I) went to the White House, where we were until nearly half past one. At the meeting were Hull, Knox, Marshall, Stark, and myself. There the President, instead of bringing up the Victory Parade, brought up entirely the relations with the Japanese. He brought up the event that we were likely to be attacked perhaps as soon as next Monday. . . . The question was how we should maneuver them into the position of firing the first shot without allowing too much danger to ourselves.
We also have the diary of Secretary of the Interior Harold Ickes, who strongly favored entering the war. On 18 October 1941, Ickes wrote that the best way to enter the war would be “by way of Japan”:
For a long time, I have believed that our best entrance into the war would be by way of Japan. . . . And, of course, if we go to war against Japan, it will inevitably lead to war against Germany.