In 2013 Governor Martin O'Malley appointed Delegate Miller as a Commissioner to the Interstate Commission on the Potomac River Basin (ICPRB).
Mississippi River | Federal Communications Commission | River Thames | Amazon River | European Commission | Columbia River | Hudson River | Colorado River | Potomac River | river | Ohio River | Interstate 75 | Missouri River | Delaware River | Royal Commission | Murray River | River Tyne | Interstate 90 | Madeira River | Army of the Potomac | Volga River | River Nene | River Clyde | River Trent | River Severn | Interstate 5 | Amur River | Amazon Basin | River Wear | Allegheny River |