This is just an anecdotal alternative but a lot of my Australian co-workers are eschewing all the US political turmoil and are still choosing to emigrate to America.
There is always turmoil. Turmoil is not a new thing. What do you think it felt like moving here after the dot com bust or after 9/11 + George Bush or after the 2008 financial meltdown. Whats happening at macro levels are out of your control. Imho people who are driven and persistent succeed no matter where they go.
For countries that need an H1-B, Canada's visas are much easier to obtain and live with.