S. 440 aims to repeal the District of Columbia Home Rule Act, which gives the district certain powers of self-government. The bill would abolish these powers one year after the bill is enacted. It is also referred to as the "Bringing Oversight to Washington and Safety to...
Simple Explanation
The bill S. 440 wants to take away a special power the city of Washington, D.C. has to make its own local rules and decisions. If this happens, it might change how D.C. is run, but it's not clear yet what will replace this power.