For 100 years, the Congressional Research Service (CRS) has been charged with providing nonpartisan and authoritative research and analysis to inform the legislative debate in Congress. This has involved a wide range of services, such as written reports on issues and the legislative process, consultations with Members and their staff, seminars on policy and procedural matters, and congressional testimony. The Government and Finance Division at CRS took a step back from its intensive day-to-day service to Congress to analyze important trends in the evolution of the institution-its organization and policymaking process-over the last many decades. Changes in the political landscape, technology, and representational norms have required Congress to evolve as the Nation's most democratic national institution of governance. The essays in this print demonstrate that Congress has been a flexible institution that has changed markedly in recent years in response to the social and political environment.

Abortion Practice is the only single-author medical textbook concerning abortion. It begins with a comprehensive view in its first chapter of The Epidemiologic Foundations of Abortion Practice. This chapter is a unique in the medical literature in presenting a public health view of pregnancy and abortion. Pregnancy is seen as a biocultural adaptation to the survival needs of the human species, and the management of pregnancy as a biocultural phenomenon that is determined by human culture. In many cultures, pregnancy is defined as a life-threatening illness, but in western culture, pregnancy is defined as normal. This reflects the role of women in western society and it affects the kinds of medical and surgical management of pregnancy that are available. Abortion alters the mortality statistics - the risk of death - for women who are pregnant. The remainder of the book provides a framework for modern abortion practice including evaluation of the patient, operative procedures and techniques, postoperative procedures, management of complications, diagnostic evaluation of pregnancy duration and fetal age, long-term risks of abortion, and program evaluation.