In a fresh bid to stop the Keystone XL pipeline, two Native American communities are suing the Trump administration, saying it failed to adhere to historical treaty boundaries and circumvented environmental impact analysis.

As you may recall, in March 2017, the State Department issued a presidential permit to TransCanada, allowing the company to construct and operate the Keystone XL.

Now, the Rosebud Sioux Tribe and the Fort Belknap Indian Community are asking a federal judge in Montana to rescind the 2017 permit and block any further construction or use of the controversial pipeline.

For more on the background and debate surrounding this issue, click here