Rep. Mo Brooks (R-Ala.), running for an open U.S. Senate seat representing his state, says he will not back Senate GOP Leader Mitch McConnell (R-Ky.) if he wins the seat. “Today, I unveil my pledge to America to fire Mitch McConnell,” Brooks said in an advertisement released by his campaign. “If elected to the Senate, I will not vote for Mitch McConnell for leader, and I will do everything in my power to ensure that Republicans choose a conservative to be leader,” he said. “America can’t afford a Senate leader who is a weak-kneed, debt junkie, open-border RINO Republican, and who, worse yet, sells out America for special interest group cash.” RINO stands for Republican in name only. McConnell’s office did not respond to requests for comment. Several other Republican candidates, including former Missouri Gov. Eric Greitens and Kelly Tshibaka, a former Alaska administration commissioner, have previously pledged not to support …