This "Feature Issue" of the quarterly journal "Impact" presents 19 brief articles on family support systems in the United States for persons with developmental disabilities and their families. Emphasis is on provisions of Public Law 99-457. Articles include: "Family Support in the United States: Setting a Course for the 1990s" (James Knoll); "Keeping Families Together: Subsidies, Waivers, and CHCO (Children's Home Care Option)" (Thomas R. Fields); "Rx: Children's Home Care Option:" (Georgianna Larson); "Federal Law Gives Families Control of Services to Their Young Children" (Norena Hale); "Legal Empowerment" (Stephen E. Scott); "Integrating Parents with Agency Staff" (Matthew M. Pope); "Kyle's Success Story" (Linda Horkheimer); "Training Families to be Case Managers" (Marijo McBride); "Technology as Family Support" (Rachel Wobschall and Erik Aasland); "Computers: Accessing a New World of Opportunity" (Jon Skaalen); "From Surviving to Thriving: One Family's Transformation" (Cindy Scattergood); "Teen Sitters Offer Child Care Alternative" (Anita Lavasseur); "Respitality: Giving Families a Break" (Maureen Horton); "In-Home Support from a User's Point of View" (Dorothy and Edward Skarnulis); "ARC (Association for Retarded Citizens)=Parent Power" (Karen Grykiewicz); "Project Seeks Answers from Families" (Ann and Rud Turnbull); "Families Educating Policymakers About Family Support" (Fran Smith); "Minnesota's Partners in Policymaking" (David Hancox and Thomas Zirpoli); "Personal Futures Planning: A Focus on the Positive" (Kay Zwernik).