Marc Theissen is an American author, columnist and political commentator. He served as a speechwriter for United States President George W. Bush (2004–2009) and Secretary of Defense Donald Rumsfeld (2001–2004). Thiessen’s articles have appeared in the Los Angeles Times, National Review, The Wall Street Journal, The Washington Post, The Weekly Standard, USA Today and other publications. He has also appeared on Fox News, CNN, NPR, and other media outlets.