Trump keeps promising he would enact the largest domestic deportation operation in American history, exceeding 'Operation Wetback' in the 50s, which deported hundreds of thousands of Mexicans.
It's a disturbing and misleading proposal, says a migration scholar:
https://theconversation.com/trump-promises-to-deport-all-undocumented-immigrants-resurrecting-a-1950s-strategy-but-it-didnt-work-then-and-is-less-likely-to-do-so-now-226943