How to fix? Carve off the residential areas and return them to Maryland. Re-define the District of Columbia to just the federal distract, the embassies, etc. Then, put the federal government in charge of the district, as it should be. Home Rule has been a total and absolute disaster (and I lived in the area for 19 years). Integrating the residential areas and what is left of commercial areas back into Maryland will allow for a total top-down reset to maybe start cleaning up the community.
Problem with that is that they still get 3 electoral votes for the President. Even if Joe Biden and his wife are the only citizens of the district.