First step in stripping troublemakers of their citizenship
To add engaging in or supporting hostilities against the United States to the list of acts for which United States nationals would lose their nationality
This is the American version of the law banning anti-Soviet activities.
UPDATE: The senate version is S.1698 sponsored by, you guessed it, Joe Lieberman, and co-sponsored by Scott Brown. So if Elizabeth Warren wants to stake out a position as being pro-First Amendment, this would be a good opportunity to do that.
UPDATE II Dent has a charming youtube announcement. So far comments have not been favorable.