This was taken TOTALLY out of context.  Everything Trump ever says is take out of context, it seems, because his "enemies" don't want people to like him.  They twist his meaning of certain things until it meets what they wish he would have said.  The democraps are a bunch of stinkin' babies with shitty pants.

https://www.washingtonexaminer.com/news/watch-house-chairman-scolds-nancy-pelosi-for-personality-attack-on-trump-on-house-floor

What he really said, in essence, was "go back to your home countries and help them to become better places".