Keystone

Comparison between the Keystone XL pipeline and alternative routes on our environment.

Critics argued the program allows pipeline companies to skirt responsibility.

U.S. District Judge Brian Morris ruled that Army Corps officials improperly reauthorized the program.

The company anticipates starting construction at a northern Montana border crossing next month.

The move pushes the controversial $8 billion project closer to construction, but it still faces court challenges.

They say some wetlands were affected, but not any sources of drinking water.