There are a LOT of reasons why this conspiracy silly is simply not true. But the most telling is a very simple logical reason.

When the japanese hit Pearl Habour, it raised the rightious fury of the American people in a massive cry for vengeance. Every newspaper in the nation called for wars against Japan, atacks against japan, editorials about japan, personal anecdotes about japan... The US was now dead et on a war with japan.

Not Germany.

In fact, only the unpredictable (and arguably, colossaly stupid) move of Hitler declaring war on the US freed the US to act in Europe. Congress and the people were no more willing to get in a war in Europe before PH then after it. Nobody could have predicted the German declaration of war.

Next, far too much is made of the carriers being at sea while the Battleships were at home. If the Navy wanted to save their ships of the line, then it would have been the opposite, despite progress in tactics, carriers were still seen as secondary to battleships in importance. It was only after the destruction of the PH fleet that the US HAD to rely on their carriers.

There is a lot more, those are just the top two reasons out of many...

Oh, and to the person who mentioned the 30 mintes time lag... this is 1941. 30 minutes is an incredibly short period of time.

Lastly, the Stinnitt book has been so soundly and effectively destroyed in the scholarly journals that it retains no credibility.