César E. Chávez and the Farmworker Movement National Historical Park Act This bill establishes, as a unit of the National Park System, the César E. Chávez and the Farmworker Movement National Historical Park in California and Arizona. It also establishes the Farmworker Peregrinación National Historic Trail in California. The boundary of the historical park shall include The Forty Acres in Delano, California; the César E. Chávez National Monument, including Nuestra Señora Reina de la Paz, in Keene, California; and the Santa Rita Center in Phoenix, Arizona. The Department of the Interior may acquire land and interests in land that are within the boundary of the park by donation, purchase with donated or appropriated funds, or exchange. The César E. Chávez National Monument shall continue to be administered as a distinct and identifiable unit of the National Park System. Interior may provide public interpretation of historic sites, museums, and resources on land not administered by Interior related to the life of César E. Chávez and the history of the farmworker movement. Interior must prepare a general management plan for the park. The Farmworker Peregrinación National Historic Trail is added to the National Trails System. The federal government shall not acquire for the trail any land or interest in land outside the exterior boundary of any federally managed area without the owner's consent.