I suspect that if the Dems lose the house the next two years will be the most productive in American History.
I think the Democrats, at some level, have given up on the presidency for 2020. They really want to hold on to the House and they are afraid that they won’t be able to.
If Trump gets both House and Senate, he will have 2 great years. And then what? The momentum for more of the same may be unstoppable — so I don’t think it’s just 2 years. The Globalist policies of selling America to China have hurt us for decades. Once Americans really see that it doesn’t have to be that way, they won’t go back. They won’t be so easy to fool again.