Here is more on the "cost" of immigration. As Cornell U. concluded, it's complicated. It does not lend itself well to your dumbed down anti immigrant spin.
https://www.politico.com/magazine/story/2016/09/trump-clinton-immigration-economy-unemployment-jobs-214216
Selected excerpts with commentary
So that is my first learning experience. It goes on….
Very interesting. At this point it seems that I’m making your case
Humm ……, more damaging evidence against my pro – immigrant philosophy. Here is more:
Maybe Trump might want to rethink his immigration policy since, by getting rid of them, he would be reversing this upward redistribution of wealth. But, I don’t think that he is really smart enough to have considered any of this..
Now, I’m not so sure about the veracity of this next passage
If we are talking about the undocumented, I do not believe that they are receiving much at all in the any of taxpayer funded services. It goes on….
So there you have it. It seems that Trump might unwittingly be helping some lower end American workers but there is the potential of harm to his rich friends. Very interesting. Too bad that this thread is not about immigration, but rather, Trumps mental defects. On the other hand, maybe this is just more proof that he is and idiot driven by impulse and animus with no real core values or intellectual curiosity