U.S. Trade Representative-Designee Katherine Tai and House Democrats are articulating trade policy under the new government, but it is filled with vagues and contradictions. As an economic fundamental, both domestic commerce and international trade can result in winners and losers. Policymakers have historically sought regulatory boundaries that ensure the benefits outweigh the costs, not that there be no cost at all.  Speaking before the National Foreign Trade Council, Ms. Tai proclaimed a new “worker-centered trade policy.” She said that U.S. trade policy “must benefit regular Americans, communities, and workers. And that starts with recognizing that people are not just consumers – they are also workers, and...