This article discusses American Institute for International Steel v. the United States, which is pending in the little-known United States Court of International Trade in New York. It involves an attempt to declare that the US legislation delegating authority to the president to impose trade restrictions is an unconstitutional delegation of legislative authority. A loss would legally curtail the president’s discretionary power to use national security as a reason to impose punitive measures against trading partners. The article identifies legal trends, where this case fits into the trade policy debates, and why it is so important. The article concludes that domestic US litigation in 2019 may well have a tremendous impact on US law and the global trading system. Many in the domestic and international trading communities (as well as those in the foreign policy and national security communities) are waiting for the results of this little-known steel litigation.

1. Introduction
 2. Broader Legal Trends and Trade Policies
 3. Pending Action in the US Court of International Trade
 4. Conclusion
 References

• Stuart S. Malawer(George Mason University)