The Tahoe Regional Planning Agency, comprised of representatives from the State of California and Nevada, approved its Regional Plan Update in 2012. TRPA adopted the plan update as the general governing document for development and environmental protection in the Lake Tahoe region. TRPA was sued following its certification of a final EIS for the plan update. Whit Manley and Chip Wilkins successfully defended the Environmental Impact Statement and TRPA’s approvals relating to the plan update in the U.S. District Court for the Eastern District of California and Ninth Circuit Court of Appeals, culminating in Sierra Club v. Tahoe Regional Planning Agency, 840 F.3d 1106 (9th Cir. 2016).