Recent legal developments have emerged regarding environmental regulations and chemical litigation in the U.S. A lawsuit opposing the Environmental Protection Agency's (EPA) methylene chloride regulation has been initiated by several parties, highlighting ongoing disputes over the intent of lawmakers following significant amendments to the primary U.S. commercial chemicals law in 2016. Additionally, a judge expressed frustration with Monsanto's attempts to delay a trial concerning PCB poisoning, criticizing the company for its inconsistent positions regarding the stakes of an appeal. In a separate matter, the EPA has proposed adding more per- and polyfluoroalkyl substances (PFAS) to the Toxic Release Inventory, reflecting growing concerns over these chemicals. Legal experts in PFAS litigation are advising clients on proactive measures to limit PFAS use amid increasing lawsuits. Furthermore, four households on Nantucket have filed a class action suit against manufacturers of PFAS, marking a continuation of legal actions targeting companies responsible for these