They and the POTUS remember what Schumer meant when he said to the President (and I paraphrase), "Let me tell you: You take on the intelligence community — they have six ways from Sunday at getting back at you" (Source).
From all appearances, it looks like the Deep State and Schumer/Feinstein just tried to make good on that threat. Grassley and Graham (and others less clearly) said as much in Committee last week.
The GOP members of the Senate have been emboldened. Here come da Boom.
Someone please explain Deep State.