Senate Minority Leader Mitch McConnell (R-Ky.) clinched a victory on Wednesday when the Senate — including 48 of the chamber’s 50 Republicans — voted overwhelmingly to admit Finland and Sweden to NATO. The resolution, which cleared the chamber in a bipartisan 95-1 vote, was a top priority for the Republican leader, who wanted to send a signal about the direction of a GOP that had drifted toward isolationism under former President Trump. Trump throughout his presidency was a critic of NATO. It was a part of the “America First” agenda that reverberated with parts of the GOP base after the...