On June 22, 2016, President Obama signed the Frank R. Lautenberg Chemical Safety for the 21st Century Act into law, amending the Toxic Substances Control Act (TSCA). The original rule that was implemented in 1976 created an inventory of 62,000 chemical substances that were already in commerce. For any substances that were not in the inventory, pre-manufacture notification (and sometimes testing) were required. The thousands of chemicals already included were “grandfathered in” and considered safe, despite inadequate testing.
Parts of the rule have been considered mostly unworkable for …