I'm not opposed to tariffs being applied when trade occurs between a nation with strong labor protections, a healthy welfare system, higher wages, and stronger environmental/safety laws and another nations that is lacking in one or more of these areas. Imposing tariffs on nations for these reasons motivates those nations to improve standards while making nations with high standards more competitive, thereby decreasing the race to the bottom.  Tariffs then, should be applied to improve labour and environmental standards and end the race to the bottom, not to pursue some  America First strategy, but tariffs do have a time and a place, and in the auto industry under NAFTA, I support tariffs if done for these reasons.