Many say and feel we knew that Pearl Harbor was going to happen. And the same could be said about that. We were not innocent ole America minding our own business.
And many would be correct. FDR not only knew, but he took actions to ensure that the U.S. would get involved. Whether you agree with the "cause" or not, there is no doubt that FDR made an end run around the non-interventionists of the time. (remember, many adult men had been to Europe during WWI, and knew what a load of crap that was)