Throughout Donald Trump’s time in the White House, I’ve been wondering, like many others, what it would take for the GOP to break with Trump.

I never thought for a moment that they’d break with him over a question of law or constitutional principle or democratic norms or political propriety. My working assumption, for most of this time, has been that if they felt like their tax cuts were in jeopardy, they might jump ship, tax cuts being the one thing that unites the party and that they know how to do. But things aren’t looking good for the tax cuts, and I see no signs of any break.

So we’re left with the question: why is the GOP sticking with Trump? They’re getting so little from him, relative to Republican presidents past. Consider the following: