From the Document: "The trade practices of U.S. trading partners and the U.S. trade deficit are a focus of the Trump Administration. [...] Congress delegated aspects of its constitutional authority to regulate foreign commerce to the President through these trade laws. These statutory authorities allow presidential action, based on agency investigations, to take various actions, including import restrictions to address specific concerns (see text box). They have been used infrequently in the past two decades, in part due to the 1995 creation of the World Trade Organization (WTO) and its enforceable dispute settlement system. [...] Increasing U.S. tariffs or imposing other import restrictions through these laws potentially opens the United States to complaints that it is violating its WTO and free trade agreement (FTA) commitments. Several U.S. trading partners, including China and the European Union, have initiated dispute settlement proceedings and imposed retaliatory tariffs in response. The retaliatory actions also raise questions with regard to their adherence to WTO commitments, which the United States has raised at the WTO."
CRS Insight, IN10943
Congressional Research Service: https://crsreports.congress.gov/