Just my opinion, but I think USMCA dying is massively unlikely. Already there is some resentment in the Republican base for souring ties with Canada (e.g. bourbon producers, tourism) and I do see Canada-US ties moving in an upward trajectory in the recent months. The USMCA is also used by US citizens to work in Canada. And considering how watered down the H1B changes have been, I don’t think this administration has an appetite for materially pissing off coastal hi-tech. At most we’ll see tightened category adjudications.