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The NAM filed an amicus brief in support of Monsanto urging the California Supreme Court to grant review of this case to address the serious constitutional questions presented by California’s Proposition 65, which maintains a list of chemicals that can potentially cause cancer, birth defects and other reproductive harm. If a product contains or produces any of the chemicals on that list, manufacturers are required to place a warning label on that product before it may be sold in California. In addition, Proposition 65 requires that a chemical be automatically listed if the International Agency for Research on Cancer (IARC) classifies it as carcinogenic. What chemicals are listed is important because of the costs borne by manufacturers and the public by the listing of a chemical under Proposition 65. The NAM’s brief argued that substances listed under Proposition 65 should be based on sound and generally-accepted science and that delegating that authority to IARC is unconstitutional. Unfortunately, the California Supreme Court denied review of this case.