Here is the order in Rosebud Sioux Tribe v. Trump (D. Mont.):
Here are the briefs on the United States’ and TransCanada’s Motions to Dismiss Rosebud and Fort Belknap’s treaty and jurisdiction claims regarding the Keystone XL Pipeline.
Coverage of the Herrera v. Wyoming argument, here.
From SCOTUSBlog, here.
Here are the merit stage briefs:
Here are the cert stage briefs:
17-532 Herrera (ac pet) [US invitation brief]