It's not unprecedented for senators to part ways with presidents of their own party. But what's happening now among Republicans is definitely unusual.
Sens. Jeff Flake and Bob Corker have openly declared President Donald Trump to be unfit for the office. Senas. John McCain and Ben Sasse are close behind. Scores of other Republican members of Congress share their contempt for Trump, but stay quiet either out of fear or a calculation that Republican unity is the path to policy victories like a big tax cut.
But defections of mainstream conservatives like Flake and the others foreshadow a splintering of the Republican Party. Trump wants a party not committed to principles or policies, but only to the Trump brand, however he defines it.
Defections in the Senate aren't new. Democrats-turned-Republicans include Alabama's Richard Shelby in 1994 and South Carolina's Strom Thurmond 30 years earlier. Republicans-turned-Democrats include Vermont's Jim Jeffords in 2001 and Oregon's Wayne Morse in 1955. But these conversions made ideological sense, involving conservatives who found themselves more comfortable with Republicans and liberals who were sympatico with Democrats.
Today's anti-Trump Republicans aren't more or less conservative than the rest of their party. Their objection to Trump concerns his character and competence, and his leadership of a party he defines largely by rage. Flake has one of the most conservative records in the Senate, but was destined for defeat in a Republican primary next year by a Trump-supporting hatemonger; he said he won't run for re-election.
In a remarkable speech delivered Tuesday on the Senate floor, the Arizona lawmaker lamented "the personal attacks, the threats against principles, freedoms and institutions, the flagrant disregard for truth or decency, the reckless provocations, most often for the pettiest and most personal reasons." He added, "Reckless, outrageous and undignified behavior has become excused and countenanced as 'telling it like it is' when it is actually just reckless, outrageous and undignified."
Bob Corker, the chairman of the Senate Foreign Relations Committee and once a candidate to be Trump's secretary of state, had worked hard to develop a constructive relationship with the president. But in a CNN interview on Tuesday, he said that Trump had "great difficulty with the truth." He told ABC News that Trump was "debasing" the U.S. Like Flake, the Tennessee Republican has decided not to seek re-election next year.
These Republicans generally disagree with Trump's preference for restrictions on trade and immigration, deplore his race-baiting and want more U.S. leadership in solving conflicts around the world. But disagreements on issues aren't the main thing that motivated them. They believe Trump's positions always are situational, that he lacks core beliefs and that he's determined to remake the Republicans in the Trump brand. There is not a single Republican officeholder to whom he feels any loyalty.