A Congressional staffer to Maryland Democratic Senator Ben Cardin was fired on Saturday, December 16, after allegedly filming a graphic gay porn video in a Senate hearing room that was leaked online, RadarOnline.com has learned. The video, which features two nude men engaging in sexual intercourse, was obtained and shared with some of the explicit content blurred out in a report from the Daily Caller. The filming allegedly took place in Hart 216, a committee hearing room that has hosted significant events in the past, including Supreme Court nominees, the 9/11 commission hearings, and testimon…