[4] Mason's first job was as a clerk in the Washington bureau of the Dallas Morning News, and In 1988 she went to Texas to work as a reporter with the Houston Chronicle.

[7][8] In 2014, Mason received the Gracie Award from the Alliance for Women in the Media for outstanding achievement as a radio talk show host.

[2][4] She has been noted for her impressions of notable figures such as Laura Bush, Michelle Obama, Elizabeth Warren and John Boehner.

"[2] Television commentator Bill O'Reilly in 2014 called her a "loon" because, according to him, she suggested that he and Glenn Beck may have damaged the Fox News "brand.

"[2] In 2011, White House press secretary Jay Carney called one of Mason's stories "partisan, inflammatory and tendentious," and U.S. National Security Council spokesperson Tommy Vietor sent her an e-mail that included an animated picture of a crying mime, a "visual suggestion that she was whining," according to Washington Post columnist Paul Farhi.