@fable: I suppose I see the problems in Washington as more systemic and the product of how the Federal government operates (and has operated) since the 19th century, as opposed to isolated examples such as the one you identify. The excesses of Administrations and high-level cabinet members seems to not follow partisan lines, though we can say both major political parties and movements have their own particular style of ugliness. In the end, it seems to boil down to a ruling elite, and they war against each other for control at the expense of Americans and their pocketbooks. The means by which the US was officially drawn into action during WW2 is reprehensible to me; the presence and movements of the Japanese fleet in the Pacific was known. I also question the means by which the US justified declaring war upon Germany during WW1. Some dubious intelligence indicated a promise by Germany to assist Mexico in reclaiming territory lost to the US during previous military action. Both instances assisted the President in gaining both Congressional and public approval...and I am rather amused at President Harding's (hopefully I have the President at the time pegged properly, please correct me if I am wrong) campaign promise to not involve the US in WW1. That was his re-election slogan, and not long after his return to the Oval Office, he did exactly what he promised he wouldn't do.
Here we have two cases of Presidents (one who is idolized by the American left, I note) seeing the need for a course of action, and proceeding to do whatever it takes to make it happen. My understanding of the climate and setting of 1917 Europe is not as defined as my knowledge WW2 Europe is...in many ways, WW1 is a convoluted and often confusing study. Historically, Americans have tended to mind their own business, and had no desire to meddle in the affairs of foreign lands. Aggressive campaigning, slogan-throwing, and demagoguery is what it took to stir public opinion to believe the shedding of American blood was necessary. In the case of Pearl Harbor, the "surprise" attack enraged the public. Over time, however, I have come to not believe that the moral high horse of defending liberty and maintaining world peace was exactly what Washington had in mind when we made our presence an overtly military one in foreign lands. Not since the travesty of the Civil War do I believe the Federal Government has clean hands in anything it does. I'm sure it goes back farther than even that; I look to the war in the 1860s as a striking example of Federal Government (Fed) imperialism.