My expectation is that the “mass deportations” will quickly morph into “mass incarceration” will quickly morph into an enslaved workforce.
There will probably be one wave of deportations just to “show we mean business” or something and then the news will move onto the next distraction while the remaining undocumented immigrants are quietly sent back off to do the jobs they were doing only now the business don’t have to pay them.
The 22nd amendment to the US Constitution bars Trump as a viable candidate for the Office of the President. It would require an additional amendment to be possible and there’s no way that 3/4ths of all US states will agree to that shit.
The only potential loophole that I can discern is that there’s no clear consensus on if Trump would be allowed to run as Vice-President on someone else’s ticket. If he can, then, theoretically, he could run for VP and then have the elected President immediately resign, making him the President again.