This offsets 830,000 bpd of crude brought in by ocean-going tankers.
If the environment was the primary concern, this would be a good thing. If you could eliminate an endless parade of tankers crossing the Atlantic, or the Caribbean, why would you not?
I of course believe the point of denying Keystone is to protect the 830,000 bpd brought in from overseas. Denying Keystone hurts the environment but helps OPEC.
BTTT