Of course, maybe the Democrats should just let it all pass. The Washington Post is already paving the way for that view:
"Ms. Pelosi, wisely, declined to take the bait, reiterating her determination to use subpoena power if necessary but insisting Wednesday that oversight “does not mean we’ll go look for a fight.”
She would be well advised to stick to that measured approach, because the country does have recent experience with the excesses of investigation (does Benghazi ring a bell?) and the harm it can do to the atmosphere for legislation. In contrast to the attitude Mr. Trump exhibited Wednesday, Ms. Pelosi’s remarks suggest that she has the capacity to learn from experience."
The mainstream press, which showed next to no scruples about the Republicans using their control of Congress to conduct an endless series of "investigations" into what everyone knew were utterly baseless conspiracy theories, now has discovered how damaging any kind of Congressional oversight would be. But don't worry, it will still be perfectly justifiable for the Republicans to continue to use the Senate to promote the most degraded conspiracy theories, and for the House too, the next time it is in Republican control.
The more things change, the more the press (and the Republicans) stay the same.