This was apparently written in the Fox universe as it is unrelated to events in this one. Trump obviously has little idea of international trade other than as a means to fill his pockets. Actually he is not very good at that.
The North American trade is basically a logical reshuffling and updating of NAFTA with improvements for Mexican labor (modified by Democrats), modification of North American parts percentages in cars and trucks that is probably self defeating due to the increased labor costs, more dairy to Canada but leaves complex Canadian protections in place, preventing Trump doing another wild tariff thing against Mexico or Canada.
Trump’s wild trade war with China was am expensive bust. China won by holding out while Trump babbled about tariffs in ways that showed he had no idea what they were or how they worked.
The end result was stressing the planetary economy for no significant reason other than show. While there are environmental improvements in USMCA those had nothing to do with Trump.
What needs to be done requires a complete transformation of planetary trade to eliminate fossil fuels, capitalist exploitation, and unsustainable growth. Pumping of the US market economy has produced a ‘melt up’ on Wall Street that presages a large correction. How this is handled to begin the transformation to sustainability and well being rather than profits for the few will require the elimination of people such as those clustering around Trump.