The Mayor is not a dictator and can't just make up laws or regulations.
He can probably get DCWP to engage in the normal rule making process, but at most this is probably going to get some AI disclosure somewhere, which is what we had for "virtually staged" lies.
Yes I'm sure he's talking about disclosure. California has this law state-wide.
It’s directing the city to treat it as false advertising in existing law if I understand correctly