The "Washington, D.C. Admission Act" outlines the process for admitting Washington, D.C., into the Union as the State of Washington, Douglass Commonwealth, while establishing a Capital to serve as the seat of the U.S. Government. It addresses the transition of laws, governance, and federal responsibilities, ensuring continuity of services and representation for the residents of the new state. The Act also defines the boundaries of the new State and the Capital, and includes provisions for elections, federal property, and the establishment of a Statehood Transition Commission.