Full constitutional protection for some,
In San Diego, poor people who want public benefits must give up their privacy. Investigators from the district attorney’s office there make unannounced visits to the homes of people applying for welfare, poking around in garbage cans, medicine chests and laundry baskets.
but no privacy for the poor
Applicants are not required to let the investigators in. But they get no money if they refuse.
Read The New York Times article here. For the legal justification read Sanchez v. County of San Diego, the court decision which ruled that rooting out welfare fraud justifies the searches.