At some point in 2019 (if not sooner) a Republican Senator may walk into the Oval Office and say to President Trump: “Mr. President, we don’t have the votes,” at which point the Trump presidency will end in a resignation or a conviction in the Senate. This scenario actually occurred forty-three years ago this summer when Republican Senator Barry Goldwater walked into the Oval Office and told Republican President Richard Nixon that they didn’t have the votes in the Senate to save his presidency.