Robert Durden Inglis Sr. (born October 11, 1959) is an American politician who was the U.S. Representative for South Carolina's 4th congressional district from 1993 to 1999 and again from 2005 to 2011. He is a member of the Republican Party. Inglis was unseated in the Republican primary runoff in 2010. In 2012, Inglis launched the Energy and Enterprise Initiative, a nationwide public engagement campaign promoting conservative and free-enterprise solutions to energy and climate challenges. E&EI is based in George Mason University in Fairfax, Virginia, and works to build support for energy policies that are true to conservative principles of limited government, accountability, reasonable risk-avoidance, and free enterprise.