Dude, you're super mixed up about what allegedly happened.
Allegedly, Trump called Haiti and a few other crappy countries shitholes and then asked out loud why can't more people from Norway want to move to the US. He had just recently met with a representative from Norway so they were still fresh on his mind.
The point he was making is that the majority of people that want to come into the US to live here are uneducated and don't have anything but labor to contribute to the US.
It was like Cypher saying "why didn't I take the blue pill" in The Matrix. It was a lament of 'why does immigration have to be a problem?'