An environmental activist group has sued the U.S. Food and Drug Administration for failing to ban or restrict the use of bisphenol-A (BPA). The Natural Resources Defense Council, based in New York City, filed the suit in federal court June 29 demanding that the FDA respond to its petition to ban BPA as harmful, according to the Milwaukee Journal-Sentinel. The FDA had 90 days by law to rule on the petition, filed in 2008, “and 20 months later, the FDA has not responded to that petition, so we are asking the court to intervene and require the FDA to take action,” Sarah Janssen, a senior scientist with the council, told the Journal-Sentinel. BPA is a plasticizer used in linings in the majority of metal food and beverage containers in the United States.