Senate Majority Leader Mitch McConnell concedes that there’s little congressional Republicans can do to fight the Supreme Court’s ruling in favor of same-sex marriage nationwide, though he predicted a flurry of litigation aimed at protecting “religious liberty” in light of the decision. The Kentucky Republican has been a staunch opponent of same-sex marriage: He was one of just six Senate Republicans to sign an amicus brief urging the high court to reject federal protection of same-sex marriage. And though he reiterated to Kentucky TV station WDRB on Tuesday evening that his position has not changed, he also said there is...