If there a official FEDERAL LAW that anybody knows of that says it must be a VALID Goverment Issued ID. I am sure this has been discussed before.

I had a huge argument in Spanish with una Cubana Vieja in Orlando two days, who would not accept my INSPASS issued by the INS and Department of Justice. The same as her green card I told her. She kept asking for a Drivers License. If it weren't for the big line behind me I would have kept arguing with her, I didn't want to look more like a A**hole than I already was.

The TSA Website does NOT say Valid for domestic either;

Proper Identification

If you have a paper ticket for a domestic flight, passengers age 18 and over must present one form of photo identification issued by a local state or federal government agency (e.g.: passport/drivers license/military ID), or two forms of non-photo identification, one of which must have been issued by a state or federal agency (e.g.: U.S. social security card). For an international flight, you will need to present a valid passport, visa, or any other required documentation. Passengers without proper ID may be denied boarding.

For e-tickets, you will need to show your photo identification and e-ticket receipt to receive your boarding pass.

There are four ways to obtain a boarding pass:

http://www.tsa.gov/public/interapp/e...orial_1044.xml