For crap's sake, the problem isn't nations but ideologies.
The bomb was built in America, but it was built by Americans, Brits, Germans, Australians, Austrians and Italians among others; all united in their resolve to overthrow totalitarianism.
The kind of blinkered, hectoring nationalism expressed by some of the "guests" here would turn fact on its head and rewrite history.
And, "Real American", look up Kohima and Imphal; if, that is, they appear in your history books.