McCain, who chairs the Senate Armed Forces Committee, called on Trump and other elected officials to stop looking at special counsel Robert Mueller’s investigation through “the warped lens of politics.”

“In 2016, the Russian government engaged in an elaborate plot to interfere in an American election and undermine our democracy,” McCain said. “… While we have no evidence that these efforts affected the outcome of our election, I fear they succeeded in fueling political discord and dividing us from one another.”