That is incorrect. The part about joining the Nazis, that is. FDR was strongly pro-Allies, and especially pro-Britain, and had been pushing for entrance into the war long before Pearl Harbor (hence those conspiracy theorists who claim that FDR allowed them to bomb us just so we could have an excuse to go to war). The Japanese would not have bombed us if they thought we had a chance of joining their side.
As for the civilian population, there was a strong isolationist movement ("Look what happened when we joined that last European war in 1917. Nothing good came from that, and now they're at it again!") and also a significant anti-Soviet movement ("Yeah, those Nazis are pretty bad, but are we really going to side with the anti-Christian Soviets?"). Thus, it was difficult for the administration to convince the public that we had to go fight the Nazis and Japanese when they were both an ocean away from us. But FDR's government was strongly in the Allies' camp.
You may be confusing some pro-German sympathy during WW1 in the US (before we entered the war) with what you think is widespread pro-Nazi sympathy (which didn't exist). Still, even then it was pretty much decided that if we joined, we would be joining with the British and French.
I'm not aware of any profiteering towards Nazi Germany or Imperial Japan during WW2; in fact the Japanese were pretty miffed at the oil embargoes we enforced on them. There may have been some trade between the US and those nations, possibly much of it from private companies, but I'm not aware of any profiteering (that is, the mass sales of arms and war supplies to take advantage of the war) towards the Axis powers. There could be, but WW2 isn't really my preferred area of study.