• Argument: Under the Antiquities Act of 1906, the president does not have the legal authority to revoke or modify a monument — only to designate one. Additionally, the tribes say the 1.35 million acres set aside by President Barack Obama holds spiritual significance and contains cultural artifacts that deserve protection at the threat of looting, grave-robbing, vandalism and development.
• Seeking: Injunctive relief “requiring President Trump to rescind his proclamation, or prohibiting him from enforcing or implementing it in any way.”
• Argument: Reducing the 1.35 million-acre monument would threaten hundreds of historical rock art panels, artifacts, pueblos and kivas.