[moe.ron]

If I'm not mistaken, doesn't EU citizens get visa on arrival? If he does, then technically he doesn't need a visa to stay for 1 month. Maybe he should arrive in NY with the Irish passport.

BTW, custom officer are the worst, especially in NY. I don't mind being check or anything, but they are so rude I was about to smack them. But then they have the authority to just mess with you and keep you indefinite for suspicious behavior. (Happen to a friend who got pissed off and started to yell at the lady)