The Americans most directly affected would be the **Mayor of the District of Columbia**, who would gain significant new powers and responsibilities over the DC National Guard, including its local deployment and administration. The **President of the United States** would lose this specific authority over the DC National Guard for local matters. Members of the **District of Columbia National Guard** would see their chain of command for local duties shift from federal oversight to local mayoral control.

Residents of the **District of Columbia** would also be affected, as decisions regarding the use of the DC National Guard for local emergencies, public events, or civil disturbances would be made by their locally elected leader rather than the President or a federally appointed general. This impacts the responsiveness and accountability of the Guard to the local populace.