Rep. Eric Swalwell (D-Calif.) predicted former Speaker Kevin McCarthy (R-Calif.) will leave Congress by the end of the year, following former Rep. George Santos’s (R-N.Y.) historic expulsion Friday. “With Santos gone, you’re hearing it here first: the next GOP member to leave Congress will be @SpeakerMcCarthy,” Swalwell wrote in a post on X, formerly Twitter,…