THE MORE I LISTEN TO AND READ ABOUT “the most liberal member of the U.S. Senate,” the more I like him. Barack Obama strikes a chord with me like no political figure since Ronald Reagan. To explain why, I need to explain why I am a conservative and what it means to me. In 1964, at the age of 16, I organized the Dallas County Youth for Goldwater. My senior thesis at the University of Texas was on the conservative intellectual revival in America. Twenty years later, I was invited by William F. Buckley Jr. to join the board of...