Eisenhower did. It just takes the will to do so.
Eisenhower rounded up 30 million people?
Trump has outlined how he would (at least try to) do so. It doesn't sound very complicated. Again, it is more a matter of political will from both the President and Congress than anything else. To say it is impossible is to give up before trying and only guarantees failure. People -- voters -- are sick of failure. Tarriffs are a constitutional tax and less intrusive of liberty than an income tax. Ron Paul spoke to this many times. There's no reason Rand can't do so as well.
Perhaps I should have gone on that tangent about TPTB's goal of (re)uniting the US and Mexico, to understand why Trump's rhetoric is hogwash. Oh well. Neither is going to happen, President Trump or not. Here's a hint: turn the infamous pyramid upside down. If you honestly believe Trump is an outsider then fine. I don't, therefore I'm certain Trump is full of it. ymmv