The top Republican in Congress on Monday clashed with a first-term lawmaker, in a sign of the growing split inside the party. Senate Minority Leader Mitch McConnell (R-Ky.) in a statement to news outlets said that “loony lies and conspiracy theories are cancer for the Republican Party and our country.” “Somebody who’s suggested that perhaps no airplane hit the Pentagon on 9/11, that horrifying school shootings were pre-staged, and that the Clintons crashed JFK Jr.’s airplane is not living in reality,” he added. “This has nothing to do with the challenges facing American families or the robust debates on substance that can strengthen our party.” Rep. Marjorie Taylor Greene (R-Ga.) has in the past speculated that the Sept. 11, 2001, terror attacks were a false flag, among other theories. Greene responded on Twitter, writing: “The real cancer for the Republican Party is weak Republicans who only know how to lose …