The EPA proposed weakening pollution standards for ethylene oxide, a carcinogen used to sterilize medical devices like catheters and syringes, reversing Biden-era rules citing threats to domestic supply chains. The move addresses concerns over manufacturing disruptions but draws criticism for elevating cancer risks near 23 U.S. facilities. Classified as a human carcinogen since 2016, the chemical poses lifetime cancer risks to nearby residents, per health advocates. Public comments are expected before finalization amid industry and environmental tensions.