However, U.S. regulatory officials may still have to issue another environmental assessment for DAPL before deciding if the 570,000-bbl/d oil pipeline can continue to operate.
Anti-monopoly agency says the Russian gas company has not cooperated.
U.S. President Donald Trump issued a new presidential permit for the base Keystone XL pipeline, allowing TC Energy to boost oil capacity by 170,000 bbl/d to 761,000 bbl/d.
Trans Mountain said it has the insurance it needs for its existing operations, which ships oil to British Columbia from Canada's main oil-producing province of Alberta, and the "expansion project."
New pipeline capacity will move Marcellus and Utica gas produced by Cabot and Seneca.
Delfin expects to make an FID this year.
US targets participants in the Nord Stream 2 and Turkstream natural gas projects.