In this opinion piece, Chris Lehnertz and Cassius Cash, leaders of the Parks Conservancy and Yosemite Conservancy, come together to urge bipartisan reauthorization of the Great American Outdoors Act (GAOA). The GAOA has been a critical lifeline for national parks across the country, here's why its reauthorization will ensure a lasting commitment for park infrastructure, ecological integrity, and public access for future generations.