From the Electronic Frontier Foundation

Stop the Internet Blacklist Legislation
The Internet Blacklist Legislation– known as PROTECT IP Act in the Senate and Stop Online Piracy Act (SOPA) in the House - is a threatening sequel to last year's COICA Internet censorship bill. Like its predecessor, this legislation invites Internet security risks, threatens online speech, and hampers Internet innovation. Urge your members of Congress to reject this Internet blacklist campaign in both its forms!

Go to the website to take action with a message to your legislators:
 https://www.eff.org/deeplinks/2011/10/sopa-hollywood-finally-gets-chance-break-Internet