Please stop recommending that checking government-issued ID is a good way to verify someone's identity before signing their GPG key.
Have you been a US bartender before? Or held any other position where you've had to verify an ID? It's not an easy thing to do. People in those positions have books of valid IDs from different states. They have lights that show the security marks. They still get it wrong regularly. A very amateur fake ID, or borrowed real ID, will fool just about everyone in any informal context.
What's even worse is that people have a habit of happily looking at passports from other countries than their own, and nodding knowingly. It's fun, but be honest, you have no idea what you're doing.
How about just signing keys with people you would actually say you know well enough to trust? It's not the Web of Amateur ID Checking.
ID checking is at best ineffective against the threats it's supposed to address, and is probably actually damaging to the Web of Trust because of the false sense of security.
No idea what I'm talking about? Learn to encrypt your email by reading the FSF's new Email Self-Defense Guide, published in honor of today's Reset The Net effort.