Contrary to what most people think, the Trump Wall is NOT a wall to keep Mexicans out and U.S. citizens in. Rather, if Trump becomes President, it's the impenetrable wall that he is going run into that will keep him from carrying out 99+% of the things that he talks about in his campaign.
This I do not believe. If Trump is a fraud (which I consider to be very possible) that will achieve the effect you describe. If not, the POTUS has vastly more power to impose his/her will now than only a few cycles ago. Ironically, this divergence from 'tradition' here in the U.S. was probably greased along specifically by the globalist contingent of the proverbial PTB as a means of achieving 'efficiency.' It would be great if it ended up biting them hard on the ass. The simple possibility of this is worth supporting Trump for as far as I am concerned.