House Minority Leader Kevin McCarthy (R-CA) has officially endorsed Harriet Hageman in the Republican primary in Wyoming. Hageman seeks to replace the current incumbent, Liz Cheney, who voted for Trump's impeachment and is serving on Speaker Pelosi's Jan. 6 witch-hunt committee. The Daily Mail (U.K.) has the story.
Former President Trump has already endorsed Hageman. House Minority Leader McCarthy is one of the two most highly placed Republicans in Congress, the other being Senate Minority Leader Mitch McConnell (R-KY).
I'd guess we shouldn't hold our collective breath awaiting McConnell's endorsement of Hageman. It could happen but McConnell has spoken against the Republican National Committee's censure of Cheney.
Afterthought: I doubt that endorsements carry a lot of weight with Wyoming voters.