What does it actually mean to be an American? This question sits at the center of the right and left’s diametric opposition on matters of immigration and citizenship. But the divide wasn’t always this sharp. For decades, says BlazeTV host Nick Freitas, the idea of an “American” was essentially “creedal.”“It's the idea that ‘well, if you kind of believe in the general idea of what America is, well, then you too can be every bit as much an America…