Plugged In with Greta Van Susteren Susteren this week examines the economic, political and foreign policy impact of President Donald Trump’s decision to levy a 25 percent tariff on imported steel and a 10 percent tariff on imported aluminum. Commerce Secretary Wilbur Ross explains the administration’s rationale for the tariffs. Rep. Mike Bost (R-Illinois), chairman of the Congressional Steel Caucus, and Jacob Funk Kirkegaard, of the Peterson institute of International Economics, offer their pers