The reason I ask is: http://www.lookingglassnews.org/ does not look like the pinnacle of journalistic integrity. The author of this story certainly sounds intelligent, but all of the conspiracy theory crap on this site makes me wonder.
John Perry Barlow (of EFF fame) litigated this issue in late 2006. He lost at every step. What came out of that is that the TSA does indeed have a written regulation requiring you show government ID, but that regulation is secret. Info on his litigation is at http://papersplease.org/gilmore/
Honestly, I think these folks have a better idea of what the intent of the Constitution was than many of the justices on the Supreme Court. Like anything, the Supreme Court is mostly about politics these days, rather than protecting anyone's rights. (Sometimes both interests are aligned, of course, but many times they are not; especially with respect to ID.)
Sorry to say that, but "good source of legal advice" is by definition one that works in court, not one with high moral ground.
Incidentally, I have some recent US coins that say, "Live free or die," but it doesn't seem socially acceptable to have that attitude anymore.
"Live in constant fear of the government and live" doesn't have the same ring...
If you are flying domestic between MSP and SFO during the holidays I highly recommend not bringing your ID. TSA simply put some marks on my boarding passes and make me go through special screening. It was better than the usual customer experience during the holiday flight season because the "terrorist aisle" was much shorter than the normal path through security. I wouldn't recommend it in PHX or TUS. The TSA agents there seemed to be people who really wanted to be Minutemen Militia border guards but weren't smart enough to get in.
I flew with 0 ID a couple years ago and it was like having a zip pass to get through the line. Times have changed.
Berkeley Professor David Wagner conducted basically the same research as this dude: http://www.cs.berkeley.edu/~daw/faa/
He came to similar findings regarding selectees: http://www.cs.berkeley.edu/~daw/faa/noid.html
Neither of those pages are dated, though, so it's still possible things have changed in the past three years. Even so, it's worth noting that both these sites are reporting post-9/11 information.
I'm curious and a bit adventurous, so perhaps I'll give it a shot. I bought the jetBlue pass, so I'll have plenty of opportunities. http://jetblue.com/deals/all-you-can-jet/?intcmp=HPHero1Eng_...