BRUNSWICK, Ga. -- People always learn the wrong lessons from elections. Most people think the election results just prove what they already believed. The smarter people in politics learn something new from the races they win -- and they learn even more from the races they lose. President Trump could learn from 2018 that immigration isn't everything. Yes, he needs to maintain his base, but also he needs to expand his electorate. In short, he has to try to win back suburban men. Everybody is going to write about suburban women. Truthfully, the GOP can lose plenty of suburban...