Several years ago I read one of the most profound commentaries on America and I regret that I can't remember the author's name. He was a Scottish writer of detective fiction (not Iain Rankin). His protagonist was a detective trying to wind down from a brutal case by visiting America, only to stumble onto a human trafficking ring. None of which ha to do with the commentary. After his adventure he spends his last day in America at a Florida beach where he sees an immigrant family and he muses "The American Dream has never belonged to Americans. It belongs to the people around the world who desire to be American. But when America closes her borders, as she inevitably will, that dream will die." I've never forgotten those words and find them most appropriate now.