The Supreme Court's February tariff ruling remains the instrument every new Trump trade claim has to answer: in Learning Resources against Trump, the Court held that the International Emergency Economic Powers Act does not authorize the president to impose tariffs. [1]

The syllabus is blunt enough for a brief because Congress holds the taxing power, tariff authority is part of that power, and the government conceded that the president has no inherent peacetime tariff authority. [1]

The administration's attempted route through IEEPA failed because the Court refused to treat "regulate importation" as a sweeping delegation of tariff power, which means the next White House tariff claim has to begin with a statute, not with a rate that sounds tough. [1]

Yale Budget Lab's tariff tracker is useful here only as a locator: the fetched page identifies an April 1 tracker and a printable PDF, but it does not expose numbers cleanly enough to print cost estimates in this brief. [2]

That leaves the paper with a cleaner, narrower sentence than the market commentary wants: the legal boundary is clear, and the economic figures should wait until the paper can read them rather than borrow them from a page that did not yield the numbers.

-- HENDRIK VAN DER BERG, Brussels