An editorial in today's New York Times condemns a policy, known as preemption, which prohibits consumers from suing manufacturers if a product harms a consumer, so long as that product is in some way regulated by the federal government. The editorial calls preemption a "perverse legal doctrine" and warns that as it "continues to spread, the public will be deprived of a vital tool for policing companies and unearthing documents that reveal their machinations."