Originally Posted by
KoKoBuddy
Someone shows a bouncer a passport from Kerplakistan, he has no clue is it's real or not or what it says. Bouncer says, no I can't accept this. The next day bar gets sued for violating the civil rights of the Kerplakistani citizen.
To avoid all this, you put a blanket no passports accepted as ID, including American ones.
Also since US passports are good for 10 years, a 27 year old can have a picture in there of him when he was 17. Since appearence can change radically in ten years, it can be hard for someone to determine if the image in the passport is a representation of the person in front of you. It would be very easy for someone under age to grab their big brother's or sister's passport and pass that off as them 10 years ago.