This issue has been on several airline business websites and in magazines. AOPA an ALPA are fighting it, so maybe AOPA has it on their website.
In short: TSA has made it into law (without going through congress!) that it has the right to confiscate a pilots license if they deem this pilot a security risk. The pilots name has to be on a list of people suspected of terrorist activities. Here comes the scary part: everybody can call the TSA, FBI or other law enforcement agency and tell them that they suspect someone. This person comes on the list and if you're a pilot, they can take your ticket. Of course you want to fight it, which is your right, but this list is a secret list, and nobody has access to it, not even a lawyer. In other words: you can't defend yourself.
This is as it was published in January. I've heard they have changed the appeal process a little. I don't think they have changed the way how you get on the list. So watch out for people who really hate you....