The Republican Party is the B-team of politics. The B stands for Bolshevik. They strike even before the iron is hot, partly because they fear it won't stay hot for long, partly because they know how unpopular their moves are, and partly because they believe in the exercise of raw power.
The Republican commandos are in a hurry because, so far, they haven't been able to legislate themselves out of a paper bag. They fear, reasonably, that the midterm elections will go badly for them even if last-minute sweeteners for the likes of Marco Rubio, Bob Corker, and Susan Collins give them an ambiguous legislative trophy to campaign on. They also must fear—if they're paying attention—that their president is marching them over the precipice into a full-blown constitutional crisis by arranging to fire Robert Mueller, and that however the imbroglio turns out, it won't nourish further legislation.
The Republican commandos are also rushing because their deep-pocketed donors are impatient. They want their tax ripoffs! When do they want them? Now!
They're in a hurry, too, because the more time that elapses before they pull off their oligarchic robberies, the more time public opposition has to crystallize and mobilize to stop them in their tracks.
They're also in a hurry because they believe in raw power, not the power of persuasion. They're not into argument, which require a certain respect for logic and evidence, and takes time. They're not into slowing down to make deals with the minority Democrats. They prefer secrecy, writing bills no one has read. They prefer, in other words, the logic of the putsch.
As Kevin Drum and Joshua Holland have written, they’re also afraid that their demographic clock is ticking and that even voter suppression, gerrymandering, and the arousal of white nationalism might not be potent enough to sustain their congressional power for long.
This is the way of the Bolsheviks. Take power now, wield it brutally, and to hell with anyone who has another idea.