If you're a USA citizen you're under no obligation to answer any of their questions, and in fact answering any of them can only really hurt you. You shouldn't

If you're a USA citizen you're under no obligation to answer any of their questions, and in fact answering any of them can only really hurt you. You shouldn't ever answer questions from any form of cop without your lawyer present, and even at the border you still don't have to, though they have more unconstitutional but legal leeway to seize your stuff and hold you as punishment. American cops across the board are getting more bold in their degradation of civilians and we shouldn't stand for it. Even tsa only has one thing they're legally allowed to do: determine you don't have weapons you're trying to bring onto the plane. Whenever I have to deal with TSA I say I forgot my ID. "But you're in the international terminal you need your passport to board." Aw bummer I guess the airline won't let me fly, here's my boarding pass. They pat me down of course but they eventually let me in, every time, cause they have to. If every American exercised their rights with the TSA the charade would collapse instantly as lines extended to hours long and security protocols were relaxed so people could get to their flights. I got to witness this firsthand after defcon once when all the attendees arriving at the airport around the same time were refusing to show ID to TSA and refusing to do the genital scanner, and a bunch of tourists were stuck in line for hours with strange people in black hoodies extolling to them the dangers of their Facebook account, until TSA finally just started pushing people through the metal detector as fast as they could.