Senate employee ID

The Senate Employee ID is an item added to Fallout 3 in the Broken Steel add-on. It can presumably be used to avoid conflict with the robotic guards and for accessing MARGoT without having to succeed in any checks.

Location
The Senate Employee ID is located in the Presidential Sub Level, shortly after entering the metro area and a little way after where the Police Hat is found. It'll be found on a skeleton in a trolley crushed under some rubble at the end of one of the tunnels.

Related quests

 * Who Dares Wins