My wife, three children and I are all US citizens. Returning to the United States yesterday via Miami International Airport, my wife and I were asked what we do for a living. The border agent checked his screen after we answered. He asked my girls after consulting his computer monitor, "Which one of you is the singer? And which one of you is the dancer?" in light of the NSA database stories, perhaps I'm being paranoid. But I felt like they had this information and we're verifying it. He entered notes on his screen as we answered. My girls are...