William "Mac" Thornberry (born July 15, 1958), American politician, has been a Republican member of the United States House of Representatives since 1995, representing the 13th District of Texas. He currently serves on the Armed Services Committee, the Budget Committee, and the Select Committee on Homeland Security.
Born in Clarendon, Texas. He received his B.A. in History from Texas Tech University and he obtained his J.D. from University of Texas Law School.
