House GOP Leader Kevin McCarthy (R-Calif.) has endorsed Rep. Liz Cheney’s (R-Wyo.) GOP challenger in Wyoming, striking a tough blow against the already-endangered incumbent. Cheney, the daughter of former Vice President Dick Cheney, has had a relatively unchallenged political career up to this point, but her participation on the Democrat-dominated Jan. 6 Committee and her comments regarding former President Donald Trump have alienated GOP voters and officials. Though he has yet to give an endorsement for many upcoming races, Trump quickly endorsed attorney Harriet Hageman to replace Cheney in the one-district state of Wyoming. On Thursday, McCarthy also endorsed Hageman over Cheney, indicating that the more established wing of the GOP has also grown frustrated with Cheney’s participation on the Jan. 6 Committee. “The most successful Representatives in Congress focus on the needs of their constituents, and throughout her career, Harriet has championed America’s natural resources and helped the people …