This report of the Senate Subcommittee on the Constitution examines the phenomenon of homeless youth, including the population, their families, survival tactics, the availability of services, and future outlooks. A section reviewing the legal constraints imposed on young people which affect their ability to live on their own is followed by a review of the agencies serving homeless youth, with data and impressions collected from interviews. A description of runaway programs throughout the United States is included. Data from on-site program visits and interviews with agency personnel, police officers, and juvenile justice, corrections, public assistance, mental health, and child care personnel are reported. Data are also included from case records of runaways and interviews conducted with homeless youth about the quality of their lives, survival techniques, difficulties encountered in obtaining food, shelter and employment and their hopes for the future. The appendices contain the Juvenile Justice and Runaway Youth acts and amendments, additional reports on homeless youth and child abuse, and interview forms for agency personnel and youths. (NRB)