Earlier quoted context omitted.
The USPS literally has a paid service to deliver bulk mail to every address in an area.
And if the law was working correctly that would mean free money for the whole area and a bankrupt sender.
There are some limited mechanisms for opting out of targeted mail (e.g. things that have your name on them), and mechanisms for opting out of credit offers in particular. There are not any mechanisms for opting out of "current resident" spam sent to everyone in an area.