Donald Trump and Bernie Sanders owed much of their unexpected popularity in the 2016 primaries to their respective stances on trade and immigration policy.Political elites and policy experts were bewildered by combative talk of building a wall and the ubiquity of anti-TPP (Trans-Pacific Partnership) sloganeering in what many saw as a bizarre election cycle. They have scrambled to explain both Trump's victory and the new political fault lines that have emerged in both major political parties, largely around trade and immigration.In struggling industrial towns and cities, the rise of Trump and Sanders was less of a surprise. These places have long weathered globalization's storm. Many feel left behind and sold short. They are anxious, and they're demanding answers.Galesburg, Illinois, is one such city.