Ronald Ernest Paul (born August 20, 1935) is an American author, physician, retired politician, and presidential candidate who served as the U.S. Representative for Texas's 22nd congressional district from 1976 to 1977 and again from 1979 to 1985, and for Texas's 14th congressional district from 1997 to 2013. On three occasions, he sought the presidency of the United States: as the Libertarian Party nominee in 1988 and as a candidate in the Republican primaries of 2008 and 2012. A self-described constitutionalist, Paul is a critic of the federal government's fiscal policies, especially the existence of the Federal Reserve and the tax policy, as well as the military–industrial complex, the war on drugs, and the war on terror. He has also been a vocal critic of mass surveillance policies such as the USA PATRIOT Act and the NSA surveillance programs (wikipedia)

He's one of the few politicians I've admired although I don't agree with everything he does.