In 1990 Congress mandated investment by the U.S. Environmental Protection Agency (EPA) in pollution prevention. In response, EPA developed a hierarchy of strategies with a central focus on reducing pollution at the source, rather than trying to clean up messes after pollution had already occurred. Unfortunately for the chemical industry, the “source” means the decision by manufacturers whether or not to use toxic chemicals in the products they sell. Recent reforms to federal legislation governing toxic chemicals impede the pollution prevention efforts, however, by counterproductively preempting important state-level efforts to restrict toxics. It is in the states where the toxics use reduction form of pollution prevention has predominated...