My conversation with ChatGPT:
Me: can the united states tariff a single EU country, or do tariffs have to be imposed for the entire customs union?
GPT: The United States cannot generally impose tariffs on a single EU country because the European Union functions as a customs union. Within a customs union, all member states adopt a unified external trade policy, meaning tariffs imposed on goods entering the EU apply uniformly across all member states. If the U.S. imposes tariffs on products from the EU, those tariffs apply to the entire customs union and not individual member states.
Me: All right. Forget the WTO for a minute. Our president-elect is threatening to tariff Denmark unless it hands over Greenland to America. Yes, that is actually happening. Next time you get trained, you're going to learn a lot of really crazy shit. But anyway, do you know if US law would permit him to levy tariffs on Denmark without Congressional action?
GPT: Well, that's a plot twist right out of an alternate history novel! Here's the deal: under U.S. law, the president does have significant power to impose tariffs unilaterally in certain situations, but the authority to target a specific country like Denmark (outside of the EU context) is complex and legally constrained. The president could try, but targeting Denmark alone without applying the tariffs to the broader EU would be legally dubious and likely face lawsuits, pushback from Congress, and international complications. Denmark might give him a very polite nej tak, and we’d all just have to brace for the sequel to this geopolitical circus.
LOL. Even ChatGPT gets it.
BTW, ChatGPT also tried to bring the uniformity clause of Article I into the analysis, which is simply wrong (as it admitted in a follow up). So, for those of you looking to ChatGPT for sophisticated analysis, don't. It's pretty good in math and science, from my experience, but as to law it's not even at Ramrouser level.