You guys are focusing exclusively on that one aspect of Trump's comment and trashing the country the immigrants are from - though that is no fault of theirs at all. In the past, Trump has advocated that immigration be handled as a meritocracy but with these comments, he is making it clear that if you are a well educated, English speaking person who is immediately capable of entering the workforce in the United States but have the misfortune (in Trump's opinion) of hailing from say, the Sudan (such as the immigrants featured in the movie "The Good Lie"), you should not be permitted in the United States because you come from a "s***hole" country. It was an incredibly narrow minded line of thinking.
Please Google "The Lost Boys of Sudan" and learn more about them. They have contributed heavily to American society and it is a great story.