The only reason the US went to war with Germany is that they declared war on us after we declared war on Japan. I'm sure a pretext would have eventually been found, but Pearl Harbor definitely wasn't it.
That's my understanding. Before Pearl Harbour, FDR was concerned that Germany would invade Western Europe, he knew Britain and France could not stem the tide of the Wehrmacht. The events of 1940 proved him correct. Further to this, and probably more influential, was the 1941 invasion of Russia by Germany. If I recall, FDR and Churchill were concerned that if Russia defeated Germany, the Soviet influence would extend into Western Europe, so there was another reason for the US to enter the war against Germany.
If I recall, FDR wanted to enter the war in Europe as events from 1939 onward unfolded, but he knew he would not have the support of congress. He did however convince congress to provide the UK with material support.
Of course, once Japan attacked Pearl Harbor there was little chance that America would enter the European war. FDR would not have had congressional support to fight a war on two fronts. It was only because Hitler declared war on the US that he gained the support of congress to enter the European war as well.
There's no conspiracy to be found, just years of history unfolding in tragic strategic maneuvering between the world's great powers (plus the fallout of WW1 and Great Depression playing its role too).
I guess there's more to be had in a conspiracy than the actual truth. It has been discussed many times, but why do people believe in conspiracy when the actual truth is far more fascinating? I mean, men actually went to the moon, why spend large portions of one's life fighting that corner when the truth is far more magnificent. Men actually walked on the moon, that big rock in the sky that we have looked upon with wonder for millenniums. How amazing is that?
It's been said before, but it is such a shame when a great enterprise like Apollo is slandered by the nay sayers.