The proclamation protected prehistoric Sinagua cliff dwellings and reflected Roosevelt’s expanding conservation program to preserve archaeological and natural sites for the federal government.
References / Sources
No source references have been added for this event yet.
Related Timeline Entries
June 17, 2026
•
Donald Trump
Executive Action
Trump's DOJ urges court to allow ballroom construction amid UFC event security concerns
The Department of Justice is advocating for the construction of a ballroom at the White House following security threats.
June 12, 2026
•
Donald Trump
Executive Action
Trump's AI security executive order aims to address industry risks
Trump issues an executive order focused on AI security without imposing strict regulations.
June 12, 2026
•
Donald Trump
Executive Action
Trump's White House UFC birthday event proceeds despite legal challenges
A U.S. judge refuses to block Trump's planned UFC birthday event at the White House.
June 11, 2026
•
Donald Trump
Executive Action
Trump's UFC matches at the White House require significant federal resources
The White House announced that staging UFC events will require $60 million and coordination from multiple federal agencies.