> refusing to show ID (this is allowed for domestic flights) There's a procedure for people who don't have a valid ID with them--but I'm not sure it is legal t

> refusing to show ID (this is allowed for domestic flights) There's a procedure for people who don't have a valid ID with them--but I'm not sure it is legal to use it otherwise. Presumably it requires making some statement to the effect of "I don't have an ID with me," or "I forgot my license at home," etc. which could be subject to the incredibly broad 18 USC 1001 statute if they really wanted to try, or more likely, they would mail you a civil penalty notice or put you on a list for additional questions in the future. Of course you could say you didn't realize the statement was false because the ID is so small that you can't even feel if its in your pocket, or you could conveniently put it in your checked bag by mistake, etc. But still, it's probably not a great look if they manage to find it somewhere when you said you forgot it.