Velocity Vector
Clinton and Lieberman have proposed a bill to ban the sale of M-rated games to minors:
http://www.gamesindustry.biz/content_page.php?aid=13330
Of course, similar bills have been shot down over and over by the courts due to the First Amendment protections granted to video games, books, and movies, but why let that get in the way of a good publicity stunt? There's a 2008 presidential campaign to think of.