And, yes, this is one time when it would useful to clarify where everyone stands. A lot of Republicans resisted Trump's nomination, and a fair number were willing to stand against him even in the general election. Many, naturally, will support a lot of the policies he signs into law. Forcing a fight on Bannon will give them an early opportunity to demonstrate that they still oppose the anti-democratic excesses — and keep anti-Trump liberals and conservatives on the same side of a fight, even as they part ways over (say) Obamacare and taxes.