His reputation caught the attention of the Ad Hoc Committee of Members of the House of Representatives for the Policy in South East Asia who asked him to present his views before Congress on the Vietnam War.

Mark continued working for McGovern, traveling to many of the primary states during his successful drive to gain the Democratic presidential nomination in Miami that year.

[2] During his work at Paramount, Mark developed new programs and supervised ongoing hit shows such as Happy Days, Mork & Mindy, Laverne and Shirley, Angie and Bosom Buddies, Tom Hanks first venture in Hollywood.

Under his direction the company sold eight network shows,[5] including CBS's The Royal Family, starring Redd Foxx and Della Reese, which Mark executive produced and wrote for;[6] What's Alan Watching?, which the television critics picked as the best Comedy Special of 1991.

[8][9] In 1996, Mark and his partner, Pamela Edwards McClafferty, formed Spellbound Pictures Ltd., USA LLC and completed a $60,000,000.00, 12-picture deal with Ellipse/Canal “+, the French Entertainment giant to supply the United Artist Theatre Circuit with a steady flow of family friendly films.

Mark is a member of Who's Who in America and Omicron Delta Kappa, the National Leadership honor society founded in 1914 to recognize achievement in scholarship, campus/community service and the performing arts.