The U.S. Federal Court of Appeals is currently hearing the U.S. Government appeal of the earlier U.S. Court of International Trafe ruling striking down Trump’s unilaterally imposed ‘emergency’ tariffs, including the ones on Canada that are slated to increase to 35%. That decision was administratively stayed pending appeal, and that’s the appeal being heard right now. If the government doesn’t win this appeal, good chance the lower court decision striking down the tariffs goes into effect and the tariffs disappear, unless therems another stay pending SCOTUS appeal- and it’s not a given that SCOTUS would hear it.
This is fundamentally a question of whether the president has the tariff authority he claims, or whether the constitutional reservation of taxation powers to Congress is what matters here.
A decision is not expected today but hopefully it’s not long. A loss by the government will pull the rug out from under a lot of Trump’s current trade policy- another reason Canada shouldn’t have yeh to sign a bad trade deal if Trump’s tariffs prove illegal.