This report describes the relationship between comprehensive prenatal care services and healthy babies, and examines the inclusion of social support services with medical care for women at-risk of problem pregnancies and unhealthy babies. The report notes that the United States trails many countries in indicators of maternal and child health. In 1989 Congress required states to expand Medicaid to pregnant women, and most states have established support services, such as home visiting. Although prenatal health services are vital, the most effective prenatal care programs include home visiting and other support services. Home visiting programs link high-risk pregnant women and infants to other important medical and social services. Examples of programs in Virginia, North Carolina, New York state, and Hawaii, which show promising results and cost savings are provided. Appendices give state-by-state information on Medicaid coverage for prenatal care and list key components of successful home visiting programs. (TM)