The TN visa comes from a treaty between the US, Canada and Mexico; it is not part of the immigration law that gives us the H1-B.
I have no specific knowledge of the wording of the treaty, but it seems highly likely that the leader of any of the 3 countries could suspend the visa.
A cousin of mine used to do staffing for highly specialized roles in the auto industry and the TN was very important in the Detroit/Windsor metro area. I don't think it is used in tech anywhere near as much as it is used elsewhere; since it is clear that the current administration is just looking for ways to give the tech industry a hard time, it seems unlikely that TN would be a target.
On the other hand, the method for getting a TN visa is very much different than other visas. A Mexican citizen coming into the US has a fair amount of advanced paperwork required but otherwise has almost no problem. A Canadian citizen just shows up at the border with a job offer, a detailed description of the job and proof of the education requirements. The immigration officer makes the determination on the spot and they either walk through or turn around! The administration could quietly issue guidance to immigration officers about how strict they need to be, and you might end up with very similar effects without all the publicity of an executive order.
I have no specific knowledge of the wording of the treaty, but it seems highly likely that the leader of any of the 3 countries could suspend the visa.
A cousin of mine used to do staffing for highly specialized roles in the auto industry and the TN was very important in the Detroit/Windsor metro area. I don't think it is used in tech anywhere near as much as it is used elsewhere; since it is clear that the current administration is just looking for ways to give the tech industry a hard time, it seems unlikely that TN would be a target.
On the other hand, the method for getting a TN visa is very much different than other visas. A Mexican citizen coming into the US has a fair amount of advanced paperwork required but otherwise has almost no problem. A Canadian citizen just shows up at the border with a job offer, a detailed description of the job and proof of the education requirements. The immigration officer makes the determination on the spot and they either walk through or turn around! The administration could quietly issue guidance to immigration officers about how strict they need to be, and you might end up with very similar effects without all the publicity of an executive order.