This is the loser's mantra. They will never control the senate and the whitehouse unless they are aggressive now. Waiting for re-informcements while the situation gets worse is not a winning philosophy. They have the forces to press the fight...Fight Now!
They only have one half of the legislature. Their power is limited until they get the Presidency back.
You cant impose if you dont have the leverage. That's politics 101, like it or not. This is probably the best route for now.