The Republicans have been focused on the ultimate evil of Obamacare for so long they won't know what to do once they get rid of it. My guess is they'll still make it illegal to deny based on pre-existing conditions and what not but eliminate the exchanges and subsidies. Fuck it, you're on your own. They don't care about people's health care, or they would have expanded medicaid in their states at no cost to them. They'll probably throw some tax credits for health care out there too, which are a joke and again only help those that can already afford good insurance.
They're all smiles right now as they have all the government to themselves, but this may very well cause a tremendous backlash later. This isn't much comfort right now, but my guess is (as I mentioned in another thread) they'll do to the country what they've done to Kansas. They simply don't learn from their mistakes. They follow the dogma of the Republican party and their zombie economics. Lower taxes, lower taxes, lower taxes. That's all they've got besides cutting vital services. This will increase the rich/poor divide like never before. They'll remove financial regulation. They'll increase spending on the military. The budget won't be balanced. Education will suffer mightily, and people will be in hock to various companies for their health, education and basic services while they try to make ends meet. The financial sector will go hog wild. It will all come spinning down the drain, just like Kansas, and the only thing they'll do is blame the liberals some more.
Abroad, our standing in the world will have diminished significantly. Terrorism will be much worse, because it looks like the same cronies that were in charge and doing the torturing during the Bush administration will be in charge again, but this time with next to no restraint. I would expect Russia to increase their sphere of influence because Trump will be too busy blowing Putin for the occasional compliment, and because the nation will be too busy dealing with domestic issues as people of color and other minorities fight to keep from losing all of their rights. Trump's most enthusiastic supporters will be very, very angry, because there will be no wall, no mass deportations, and people will still be coming into the country. They will feel betrayed and lash out, probably on the minorities instead of their Orange savior.
People will be over the shithole the US has become, and then maybe, just maybe, they'll hand it all over to the Democrats to fix. Maybe with some luck the democrats will have a new leadership by now and be more effective. Once again, a good President will be handed a clusterfuck to fix, and the Republicans will use Trump as a scapegoat and then blame everything else on the new President.