Sen. John McCain (R-Ariz.), undergoing cancer treatment in Arizona, has been unable to appear on the Sunday news shows, but he still joined a thin chorus of Republicans on Sunday to defend Special Counsel Robert Mueller's investigation into Russian election meddling and possible collusion with President Trump's campaign. Over the weekend, Trump lashed out at Mueller by name on Twitter for the first time, raising concerns that he would fire Attorney General Jeff Sessions as a prelude to ordering Mueller's ouster.
Trump's error-filled tweets prompted several top Democrats, including Senate Minority Leader Chuck Schumer (N.Y.) and Sen. Mark Warner (Va.), the top Democrat on the Senate Intelligence Committee, to urge Congress to pass stalled bipartisan legislation to shield Mueller from political interference and Trump's wrath. Senate Majority Leader Mitch McConnell (R-Ky.) and his top deputies have not commented on Trump attacking Mueller, and House Speaker Paul Ryan said through his spokeswoman simply that "Mueller and his team should be able to do their job."
Sens. Marco Rubio (R-Fla.), Jeff Flake (R-Ariz.), and Lindsey Graham (R-S.C.) all voiced support for Mueller on Sunday, as did Rep. Trey Gowdy (R-S.C.), but the GOP leaders of the House and Senate intelligence and judiciary committees have remained silent. One Trump lawyer, John Dowd, urged an end to the Mueller investigation on Saturday, but a second lawyer, Ty Cobb, said late Sunday that Trump "is not considering or discussing the firing of the special counsel, Robert Mueller." Trump can't fire Mueller directly, and the man who can (for cause), Deputy Attorney General Rod Rosenstein, said last week that Mueller "is not an unguided missile" and "I don't believe there is any justification at this point for terminating the special counsel."