Prime Minister Mulroney conceded to John Turner in the 1988 debate (which he lost) that Free Trade can be terminated with 6 months notice.

why does Canada accept the Proportional Energy Sharing clause?

a robust Chapter 11 that allows American corporations to sue Canada government whilst trying to serve and protect Canadian citizen?

a sham of a Dispute Settlement Panel that the United States governments just ignore?

treat U.S. corporations as though Canadian without ensuring Canada has contenders see Canadian Retailers, Stelco, a secure Auto Industry etc.?

Reciprocity is a much more honest concept.