Incorrect. While the Trump administration is more enthusiastic about aggressive intervention in commerce in general, the recent sanctions are the culmination of over a decade of bad behavior by Huawei, recognized by many countries:

https://en.wikipedia.org/wiki/Criticism_of_Huawei

How were the mini-vans from Canada a national security threat?

As far as technology is concerned US is using its corporations(Apple, Cisco, microsoft etc) for espionage as well so there is nothing new here.

I think the assertion is that US has lost core competency at things like steel and cars, so by making it harder to bring in mini-vans from Canada or whatever, they're proposing a magic rebirth of those industries in country. Those are the same competencies we'd need if we wanted to build tanks or battleships or bombers for another assault on Normandy. Which we don't, that was important 80 years ago but not now.

The reality of course is probably more like pandering to steel and auto workers.

> https://en.wikipedia.org/wiki/Criticism_of_Huawei

I see lots of accusations, but very little evidence