Anecdotally, seems there's a lot of Canadians expats here in the Valley and they don't seem too keen on returning. We've been getting a lot of international applicants (but work from home was supposed to mean Canadians could avoid moving to the "dangerous" US but work for American companies?).

Post 2016 the messaging from most commonwealth countries (UK, Canada, Australia) seemed to be that they were going to be the ones benefiting from a brain drain of Americans leaving the country. Canada was supposed to become an "AI Superpower" and its Universities were supposed to be where innovation was going to happen next due to the perceived hostility of the United States to foreign talent.

Canada sure had a lot of "talent" immigrate in the meantime, but from my observations it's mostly people who can't -and likely won't ever be able to- secure a US visa, mostly due to skills (there's a reason they immigrated to Canada, it's way easier and the quotas are close to 10x per capita compared to the US). Some companies leverage this and have floors of international devs they park in Canada for a fraction of their US counterpart through a subsidiary.

It's interesting, in retrospective, to see how wrong these predictions were. Top destination for Canadian nationals in Academia was, and still is... the US.