President Joe Biden has designated the Avi Kwa Ame National Monument in Southern Nevada as a national monument, protecting 506,000 acres of Nevada's Spirit Mountain and the surrounding desert. This is a major victory for the Fort Mojave Indian Tribe, who have been advocating for the site for three decades, and is part of Biden's larger effort to protect the environment. The monument is one of the largest tracts of land to come under federal protection so far during Biden's presidency.