The Organ Mountains-Desert Peaks National Monument will include nearly 500,000 acres . Hide Caption President Obama established the Cesar E. Chavez National Monument in 2012 .
The Organ Mountains-Desert Peaks National Monument will include nearly 500,000 acres . White House : Designation in New Mexico could generate $ 7.4 million in economic activity . President Obama established the Cesar E. Chavez National Monument in 2012 .