I've seen some accounts that are reminiscient of today, especially FDR's extremely questionable Naval campaign against the Germans prior to December 7th.

Seems there was also some rumbling against declaring war on Germany, because the "real enemy" was Japan, and not just by German-American Bund spokespersons, either.

I think you could draw a loose parallel between declaring war on Germany then and invading Iraq today, at least in terms of justification. Not that I'd agree with it....