The pubs are loathe to pursue challenges because they fear domestic unrest. They hope to undo the damage after o is gone. Not realistic.
The bottom line is that congress is full of very wealthy men; and rich conservatives are financially at risk if society goes boink.....if they are pauperized with hiring attorneys to defend themselves from federal agencies whose heads are committed to revolution.....if the banks close...if they are detained......if the EPA and NLRB war against their businesses or those in which they have interest.
The situation is not quite bad enough for then to pledge their sacred honor and fortunes....their lives. They, rather, think wishfully for devine Intervention.....or simply to be on the suriving side at the end of this ague.
They have allowed o to proceed unchecked too long. Critical mass is close or past. We descend, I think.
My unlearned opinion.
You nailed it.