Mark Deklin is an American actor. He also works as a fight director. In 2000, he debuted on television with a one-time role on Ed. He later had one-episode roles on Sex and the City, Charmed, Frasier, and One on One. His first film appearance was in 2005’s Herbie: Fully Loaded, followed by a performance in the movie Mini’s First Time. He later played recurring character Dr. Matthew Shaw on the Fox series Justice. He next played Elliott Mayer on The Ex List. In the 2010s, he had starring roles on the short-lived shows Lone Star as Trammell Thatcher and GCB as Blake Reilly. As of 2017, he stars as Senator Jack Bowman on Designated Survivor.