Tariffs are just a lever to get things done on the international front.
Canada has been neglecting security for a long time, so it's a wake-up call, and it's not a bad thing to put this out publicly to change things.
CBSA only inspects about 4% (some sources say even 1%) of all containers that ship in Vancouver. Quebec-Vermont* border control has been a joke for years.
* https://www.youtube.com/watch?v=Ug6Ryxza0tE * https://www.montrealgazette.com/news/provincial-news/article...