CNN leadership needs to get rid of some of their reporters to give this guy airtime. Why didn't she ask him about Colberts team in the Capitol?
maverick (n.)
1867, "calf or yearling found without an owner's brand," a word from the great cattle ranches of the American West, so called for Samuel A. Maverick (1803-1870), Texas cattle owner who was notoriously negligent in branding his calves.
All neat stock found running at large in this State, without a mother, and upon which there is neither mark nor brand, shall be deemed a maverick, and shall be sold to the highest bidder for cash, at such time and place, and under such rules and regulations, as the round-up commissioners of the district shall prescribe. [act to amend the General Statutes of the State of Colorado, approved April 8, 1885]
The family name is an old one in Boston, and a different Samuel Maverick was killed in the Boston Massacre.
https://www.etymonline.com/word/maverick