The Trump administration on Monday approved a proposed expansion of an oil sands pipeline that crosses the Canadian border.

Enbridge Energy’s Line 67, also known as the Alberta Clipper, now has State Department approval to nearly double its capacity at the crossing near Neche, N.D., to about 890,000 barrels per day.

Line 67 serves a similar purpose to the highly controversial Keystone XL pipeline, and after the expansion, it would carry slightly more oil than Keystone. Environmentalists opposed to Line 67 have sought to tie it to Keystone.

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It carries oil sands petroleum — which is very energy-intensive to refine — from Alberta’s booming oil country to the United States’ pipeline system for refining.

The Line 67 expansion uses new and upgraded pump stations with the same 36-inch pipelines, which nonetheless required new approval from State.