was once the shadow government of the United States
and is one of the few old world organizations to survive the Great War
. Members of the Enclave were hardliners who both embraced the idea of a nuclear war and knew that the common man could not survive it. They believed that as long as the "important people" of the United States survived, they could regroup quickly and wipe out communism once and for all. Though not technically part of the Enclave, many powerful corporations benefited from the Enclave's actions and their research facilities were protected during the firestorm of 2077
Come 2077, with total nuclear war rapidly arriving at America's doorstep, the President of the United States and a number of other United States government officials leave their posts to take refuge in a number of secret locations around the world. Among them was the Poseidon Oil Rig
. Here, the President himself set up a secret base from which the U.S.A. could continue to exist and wage war on China
, with the eventual goal of retaking the continental United States.