The migrants that do arrive in the U.S. are fleeing situations exacerbated by decades of bad American foreign policy. Tariffs on Mexico would continue that pattern.
The single most important vote of the 116th Congress will be on trade: specifically, the NAFTA replacement. We have absolutely no idea where the new legislators stand on it.
The president announces tough tariffs on steel. The media goes crazy. The president wrings meaningless concessions out of U.S. partners and then lauds his own deal-making prowess. And scene.
Much has been made of the very real woes of American workers. But Mexicans are trapped in an especially brutal cycle of dependence and exile.