Earlier this month, the Trump administration re-imposed tariffs on aluminum imports from Canada, signaling a new salvo in the now years-long trade war it has been waging with countless U.S. trading partners. But what gives the president the authority to pursue such measures unilaterally, even when he lacks support from members of his own party in Congress? To talk through this question, Scott R. Anderson sat down with Kathleen Claussen of the University of Miami School of Law and Timothy Meyer of Vanderbilt Law School. They discussed the scope of the president's authority over trade, where it came from and what a future Congress might be able to do about it. See acast.com/privacy for privacy and opt-out information.