District 6 Supervisor Matt Dorsey has introduced a new ordinance related to drug-free supportive housing in San Francisco. The ordinance is intended to have an impact, although the specifics of its effects are not detailed here. Dorsey has explained the ordinance's potential, providing insight into its capabilities.

Further information about the ordinance and its potential impact can be found through additional sources, including an explanation from Supervisor Dorsey himself, which may provide a more detailed understanding of what the ordinance can do.