 Vance, like Trump, favors higher tariffs on China to protect U.S. industries by raising the cost of imports, something economists warn could trigger another bout of inflation. We need to protect American industries from all of the competition. Of the two, Vance has been more visibly pro-union, visiting a picket line in Ohio last year. Trump appeared separately with non-union workers. Trump has harsh plans for undocumented immigrants, a view shared by Vance.