Indeed, but many in Canada don't like that...they want to keep the old world order, with "free trade" access to the largest economy in the world while the U.S. bears most of the military burden as well. What happens with the American economy matters a lot to Canada, as Canada has no Plan B.
The infighting has already started for the 2019 election, with Mexico moving ahead on a deal without Canada. Funny, since one year ago it was Trudeau who pledged not to throw Mexico under the bus. The NAFTA worm has turned.....