It's true. (click View Co-Sponsors under Senator Patrick Leahy's picture to see the list.)
There's been much written about Protect IP/SOPA but if you need a quick primer on what it's all about and why it's so potentially dangerous, here's an excellent short video:
I fully expected see my Senator, Dianne Feinstein on the list of S.968 co-sponsors but Al Franken? The same Al Franken who's a champion defender of net neutrality?
I thought there must be a mistake so I called Senator Franken's D.C. office and asked how this could possibly be. The staffer who answered told me (paraphrasing) that "The Senator is against online piracy and believes piracy hurts American jobs". I pointed out that this is an extremely flawed bill that can lead to the kind of internet censorship found in countries like China and Iran. I expressed my extreme disappointment in the Senator's position.
Maybe you'd like to do that as well:
Senator Al Franken
309 Hart Senate Office Building
Washington, DC 20510
Here's a form from Demand Progress that you can use to automatically mail a letter to your Congresspeople.
And here's another from Fight For The Future The makers of this video.