Donald Trump said many, many memorable things on the campaign trail as he unbelievably became our 45th president over the course of 2015 and 2016. But nothing stuck as much as what he had to say about Mexican migration on Day One, moments after he and Melania glided down the fancy elevator at Trump Tower to announce his candidacy. “When Mexico sends its people, they’re not sending their best," Trump said on June 16, 2015, adding: "They’re sending people that have lots of problems, and they’re bringing those problems with us. They’re bringing drugs. They’re bringing crime. They’re rapists. And...