I'm in full agreement. I sent an e-mail and made a call yesterday. The call was a little scary for me, since I've never made a political call before, but me being uncomfortable is worth saving animals' lives.
E-mail is important, but calling is even more important. If you don't know your representative's name, look it up on the site LauraTiara linked! Just call the switchboard, ask to be directed to your congressman's office, and leave a message with whoever answers - say your name and your city and state, say that you would like your congressman to please vote YES on the Rahall-Whitfield Interior Appropriations Amendment, and thank them. That's all, five minutes total, and it will make a BIG difference!