Registering the name of a famous person as a domain name is a violation of the Anti-cybersquatting Act, 15 USC 1125(d), this includes Senators. I suggest you speak to an attorney that specializes in this type of law for a specific answer to your legal question.
Philip Braginsky, Sills Cummis and Gross
http://www.sillscummis.com/attorney/attorney.asp?id=1051
Answered on Aug 12th, 2011 at 5:25 PM