Head of State

Head of State is a side quest

Side with the former slaves
The quest is given to the Lone Wanderer in the Temple of the Union by Hannibal Hamlin. Hamlin wants to relocate his slave haven from the Temple of the Union to the Lincoln Memorial and restore the memorial as a sign of freedom. The quest may also be started after speaking with Leroy Walker or killing the slavers at the Lincoln Memorial.

Hamlin requests for the player character to scout the Lincoln Memorial to see if it is still occupied by Super Mutants and if so, kill them. He will also ask the player character to assist Caleb Smith in finding a picture of the Lincoln Memorial which will serve as reference material for restoring the location. The picture of the memorial is located on the second floor of the Museum of History.

The player character must return to the Temple of the Union, at which time Lincoln's head will be secured to the back of a brahmin and the group will leave for the memorial. The player character will then meet the group outside of the Mall Metro Northwest entrance. The Lone Wanderer can tell the group to wait or accompany them as they attack the slavers. There are eight slavers present, and once killed, speaking to Hamlin completes the quest.

Side with the slavers
The first time the player character talks to Leroy Walker, he will ask them to find items related to Lincoln. The second time the player character talks to Walker, or after they trade the first Lincoln item, Walker will ask the player character to locate Hannibal Hamlin. The player character can tell Walker where the slaves reside, causing the group to leave the memorial for the Temple of the Union. Meeting the group under the highway west of the Temple of the Union, speaking to Walker will begin the attack. The death of all slaves within will complete the quest.

Bugs

 * If the player accompanies the slavers to the Temple of the Union, and Walker is killed during the trek, but other slavers survive, the quest marker for exterminating all the slavers may permanently stay over Walker's body. The quest is then unable to advance through either storyline.
 * This can be fixed by manually progressing the quest stage via or.
 * If Hamlin and his group do not appear outside the Mall Northwest Metro Station, they may still be camped at the Temple of the Union. If they aren't moving from there, turn them hostile by attacking one, followed by fleeing. After a couple of in-game days, they should appear at the metro being non-hostile.
 * Killing the slavers prior to the quest may fail the quest upon reaching the memorial. This only happens if the player escorts Hamlin to the memorial.
 * Instead of failing the quest, Hamlin's group may stand around expecting the player to kill the already dead slavers. On PC, this may be fixed by using the command.
 * When Hamlin's group leaves the temple, Simone Cameron may spontaneously decide to turn around and head back to the temple and remain there indefinitely.
 * While attacking the Temple of Union, Charon may turn hostile toward the slavers.
 * Occasionally, Hamlin will appear out in the Wasteland and be killed by Enclave soldiers.
 * The slavers may become hostile and attack the player if they move forward at all after being told by the slavers to avoid walking on the steps, regardless of whether or not they were anywhere near the stairs.
 * After Hamlin and the slaves arrive in the Mall Northwest station, they may wander off in a random direction. Talking to them only gives normal dialogue options, as if you were still at the Temple of Union.
 * It may be impossible to start the quest by talking to Hamlin. However, it will still activate if the slavers are turned hostile.