> As Americans that believe in the Republic, what exactly are we supposed to do about this?

If you are in a red state/district, first step would be to contact your elected federal rep(s) and tell them that you're displeased.

Use language like "Trump was elected to correct Biden's overreach, but he's now overreaching in a much worse way." Put it in language where you frame things like a 'Constitutionalist' and 'limited government'. The stereotypical small-government, Originalist GOPer.

If you come off sounding like a Democrat they'll probably ignore you, but if the (so-called) 'grass roots' MAGA folks are thought to be upset then you'll probably get more traction.

Or you'll just be ignored regardless.