By American legal standards, the Tohono O’odham Nation is transnational, with its lands straddling the U.S.-Mexico border. Today, the Tohono O’odham lands encompass, among Native American tribes, the second-longest territory along a border. On May 27, 1907, President Theodore Roosevelt issued a proclamation stating that space within 60 feet of the U.S.-Mexico border belonged to the federal government, to help monitor the border. When Wilson penned his February 1, 1917, executive order outlining the boundaries of the Tohono O’odham Reservation, there was no mention of the U.S.-Mexico border. Starting in the late 1970s, the Tohono O’odham began working with Border Patrol on monitoring traffic across the dividing line.