Environmental Cassidy & Associates has registered to lobby on issues related to the Okefenokee Swamp for the Southern Environmental Law Center. The wetlands span 438,000 acres across the Florida-Georgia state line, much of which is protected by the Okefenokee National Wildlife Refuge and the Okefenokee Wilderness, but the Southern Environmental Law Center opposes a mining company that wants to mine 8,000 acres of the wetlands.