Politics is often about perceptions, and he really brought some high energy activity into the first few weeks. Lots of executive orders being thrown about and such. And to be fair, this can and often is quite powerful - you don't want your business to fall foul of the God-Emperor's Twitter account after all .
Healthcare seems to be more Paul Ryan's thing, but w/e. As for immigration, he's done quite a bit actually - namely, he's showing the public how insane and out of touch so many US judges are. It's the president's job to control the borders, and per decades-old laws like the ones giving privileged immigration status to Soviet Jews, religion can most definitely be a key factor.
The next what? Democrat? This is the beginning of the thousand-year Trumpenreich you know...
More seriously, whilst you may be right, it will at least slow the current flood down, which is always good if you want the USA to survive. And if Trump can start deporting enough Hispanics and the like, the Democrats may find they have to keep the wall up to have any chance of getting enough white votes to win another election :P .
Because clearly Trump cares a lot about what the pollsters say about him .
As we saw with Brexit and the God-Emperor's ascension, it's usually a bad idea to bet against him. I'm expecting a Trump landslide in 2020.
Perhaps we could then get Steve Bannon in for 2024 ?