Portraits of Professor Robert P. George, Conservative Thinker That Republican Presidential Candidates Seek Advice From [Getty Images]

Robert P. George, conservative scholar and professor of politics at Princeton University, sits for a photograph at his office in Princeton, New Jersey, U.S., on Wednesday, Sept. 23, 2015. Few advisers are having more influence on conservative thinking this presidential campaign cycle than George, an unofficial counselor to several Republican hopefuls, including Ben Carson, Senator Ted Cruz, and Jeb Bush. Photographer: Chris Goodney/Bloomberg via Getty Images

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