Energy, in this case oil, is the lifeblood of an economy and a nation. Without it, we go back 100 years.
Canada wants to pump 650,000 B/D into the US. In return, Canada is willing to accept little bits of paper, or more likely, entries in an electronic ledger denominated in US dollars. Electrons cost even less than bits of paper.
Explain to me how this is a bad deal for the USA?