It's well worth looking at the list of sponsors at the FRPAA Wikipedia link. Heck, I'll cut and paste -- it's a long list, but these people deserve recognition:

Senators John Cornyn and Joe Lieberman

In the House, Representatives Michael Doyle, Frederick Boucher, Michael Capuano, Jerry Costello, Bill Foster, Barney Frank, Gregg Harper, Paul Hodes, Tim Holden, Dennis Kucinich, Rick Larsen, Zoe Lofgren, Stephen Lynch, Dana Rohrabacher, Fortney Stark, Debbie Wasserman Schultz, and Henry Waxman

I only follow the politics of open access loosely, but my impression is that Lieberman has been a strong supporter since well before it was fashionable - well back into the 1990s.

I disagree with many of these people on many things, but I think this work is admirable, and worth supporting.

Edit: I notice that Senator Ron Wyden is missing from Wikipedia's list. Not sure what's up with that. He was definitely involved.