This map, a screenshot from The Opportunity Atlas, shows household income in 2014-2015 for people born between 1978 and 1983 to low-income parents. In areas that are more red, people who grew up in low-income households tended to stay low-income. In areas that are more blue, people who grew up in low-income households tended to make more money. The Opportunity Atlas/Screenshot by NPR hide caption

Last year, the Trump administration unveiled its goals for renegotiating the North American Free Trade Agreement, a deal that reshaped trade between Canada, Mexico and the United States. Lars Hagberg/AFP/Getty Images hide caption

Amir Peay recently opened a distillery in Lexington, Ky., at the site of the James E. Pepper distillery. About 10 percent of his revenues come from exports, and Peay worries that the European Union's tariffs will hurt his overseas business. John Ydstie/NPR hide caption

Mary Buchzeiger, CEO of Lucerne International, says President Trump's proposed tariffs on imports could destroy her Michigan-based company, which supplies automakers with parts mostly made in China. This week, she presented her case for an exemption from the tariffs at the International Trade Commission building in Washington, D.C. John Ydstie/NPR hide caption

Steelworkers leave a plant at the end of their shift in Bethlehem, Pa., in 1947. Employment in the industry has declined by 80 percent from its peak six decades ago, according to author Douglas Irwin. Hulton Archive/Getty Images hide caption