 The Consolidated Natural Resources Act of 2008 authorized the National Park Service to conduct a special resource study of sites that are significant to the life of Cesar Chavez and the farm labor movement in the western United States.The study evaluated the significance and suitability of sites significant to Cesar Chavez and the farm labor movement, and the feasibility and appropriateness of a National Park Service role in the management of any of these sites.Cesar Chavez's birthday, March 31, is a holiday in California, Denver (Colorado), and Texas.