For instance:

‘Nebraska congressman Don Bacon told the Omaha World-Herald: “If he went through with the threats, I think it would be the end of his presidency. And he needs to know: the off-ramp is realizing Republicans aren’t going to tolerate this and he’s going to have to back off. He hates being told no, but in this case, I think Republicans need to be firm.” …’ (Chris Stein via The Guardian)