>Canada is that it’s broadly in a weak negotiating position here.

That's an understatement. Hypothetically if Canada were isolated from the world, it would regress in the quality of life in 10 years. The most capable Canadians have moved out, mostly to the US. The average Canadian has unwarranted sense of nationalistic pride about them (compared to their neighbors).

Isolate US from the world, and assuming that the govt does not meddle too much with local businesses, in 10 years they will bounce back to being more self sufficient than it is now.

This is a useless hypothetical. Almost every country would regress in quality of life if it were suddenly cut off from the global economy. The options aren’t a bad deal from the US or complete isolation. Canada is making deals with reliable partners abroad.

By definition if you isolate a country from the world it would be more self sufficient that very moment than it is the moment before it is isolated. Isn't that obvious?

> The average Canadian has unwarranted sense of nationalistic pride about them (compared to their neighbors).

If you think Canadians have more nationalistic pride than Americans, you seriously need to get glasses.

Americans literally pledge themselves to their country every day of school.