The Forest Service and the Animal and Plant Health Inspection Service (APHIS), as co-lead agencies, propose to supplement the 1996 Record of Decision (ROD) for the 1995 Environmental Impact Statement (EIS): Gypsy Moth Management in the United States: a cooperative approach. The Forest Service and APHIS are proposing to add new treatment options, which are described in Section 4 on the Alternatives Considered. New treatments that were not available when the 1995 EIS was written would provide gypsy moth managers with more flexibility in conducting suppression, eradication, and slow-the-spread projects. Making new treatments available is also expected to improve the gypsy moth management program, because each new treatment developed over the last 30 years has proven to be safer, more cost-efficient, easier to use, and often more effective than older treatments. The supplement also provides new information on the gypsy moth and treatments since the 1995 EIS.