sentences:  After graduating from law school, Hertling served as a law clerk to Judge Henry A. Politz of the United States Court of Appeals for the Fifth Circuit.During the George W. Bush administration, Hertling worked at the United States Department of Justice from 2003 to 2007, where he served as Acting United States Assistant Attorney General for the Office of Legislative Affairs.Before joining the Bush administration, Hertling served as the Republican Staff Director of the United States Senate's Committee on Governmental Affairs.