The Constitution protects individuals against unreasonable searches, but for this protection to have practical meaning, the courts must enforce it. This week, the Supreme Court let stand a disturbing ruling out of California that allows law enforcement to barge into people’s homes without a warrant. The case has not prompted much outrage, perhaps because the people whose privacy is being invaded are welfare recipients, but it is a serious setback for the privacy rights of all Americans.

San Diego County’s district attorney has a program called Project 100% that is intended to reduce welfare fraud. Applicants for welfare benefits are visited by law enforcement agents, who show up unannounced and examine the family’s home, including the insides of cabinets and closets. Applicants who refuse to let the agents in are generally denied benefits.

The program does not meet the standards set out by the Fourth Amendment. For a search to be reasonable, there generally must be some kind of individualized suspicion of wrongdoing. These searches are done in the homes of people who have merely applied for welfare and have done nothing to arouse suspicion.

The United States Court of Appeals for the Ninth Circuit, based in San Francisco, rejected a challenge brought by welfare recipients. In ruling that the program does not violate the Constitution, the majority made the bizarre assertion that the home visits are not “searches.”