My cousin a liberal nutbird who moved to California from West Virginia decades ago is happy to remind you that calling yourself an American is incorrect since Canadians and Chileans are also Americans.
My cousin, let's call him Bob because that's his name, is an expert on everything. As far as he knows, that is. Let's face it Bob is a jerk, every family has one but Bob is an exceptional jerk who hasn't held a job in 30 years. Bob knows that it is wrong that citizens of the United States of America like to call themselves Americans.
Well Bob, I got news for you I'm an American, and there is nothing wrong with Idenitrifying as one. As proof I can offer a long list of examples none of which will convince you that you are wrong because you're never wrong.
But, I can guarantee you when the last ISIS terrorist looks to the sky and sees a missile headed right for the last ten square feet of earth terrorists control, he'll be cursing that the Americans are coming.
Happy 4th of July Bob, hope you're as proud to be an American as I am.