California's Prop 65: a better way to regulate?

California's 'Safe Drinking Water and Toxic Enforcement Act of 1986' or Proposition 65 has inspired a similar bill in Massachusetts which requires industries to inform the public of any toxic substances present in their products. Proposition 65 gives industries the responsibility to publish warning labels on products to warn consumers of any hazardous chemicals present in the product. The Massachusetts law expands on the older law by including endocrine disrupter and neurotoxins in its list.