Can Trumps economic plan work?

[hollodero]

I ask in honest interest. I can't tell, but I wonder.
It actually seems that automobile companies now intend to move back from Mexico to the US and produce there. They claim it has nothing to do with possible tariffs, but it seems more than just coincidental that these decisions are taking place now - even though the Mexican automobile business is obviously flourishing.

And never mind the environmental impact (because who does), can getting rid of regulations, digging out coal under American soil, decreasing taxation for companies and threatening with high tariffs really lead to more jobs? More wealth, even?
Or (I think that's possible) will the wage level shrink, getting closer to Mexican standards? Will the tariffs lead to less exports, hence not decreasing the trade deficit and eating up the possible positive effects by shrinking total production?

Economics is my weakest foot (well, one of the weak ones at least), so you could really form my opinion here. What an opportunity! I also don't want to mention or talk about the effect that taking jobs back from Mexico might increase the migration pressure and a flourishing neighbour would be the best way to decrease immigration. Because I heard you already got a wall in store for that very reason. And I simply wonder about the "domestic" success here.

So enlighten me. If you please.