Law360, New York (December 23, 2014, 1:53 PM EST) -- As 2014 comes to a close, it has become clear that the failure of the 113th Congress to enact compromise legislation reforming the aging federal Toxic Substances Control Act emboldened numerous state legislatures, which enacted or are currently entertaining laws that regulate — and in some cases completely prohibit — certain chemical substances. Such legislation ranges from laws that completely prohibit a specified chemical substance and products that contain that chemical, to statutes enabling a state agency to identify and list "priority" chemicals for which makers of products containing the listed substances must file certain reports and make disclosures to customers. Such legislation generally seems innocuous. Who could say no when asked to support a bill enabling state officials to identify and post a list "chemicals of concern?" However, the potential consequences of such laws have yet to be determined....