■ Abstract Abortion is an extremely safe and common medical procedure. In the United States, over one million women had an abortion in the year 2000. Advances in early abortion techniques have helped to increase the proportion of early procedures, the safest type. Abortion rates have been declining since the early nineties among adults and adolescents, but rates among poor, minority women remain high. State restrictions to abortion have a larger impact on poor women and young women. Restrictions and regulations have also resulted in the concentration of abortion services in specialized clinics. These clinics are subject to harassment. The expansion of abortion services to more types of providers could increase access, as well as integrate abortion into women's health care.
LEGAL CHANGES AND STATE RESTRICTIONSSince the passage of Roe v. Wade in 1973, many legal challenges to abortion rights have been mounted. The 1992 decision Planned Parenthood v. Casey upheld the right to abortion but, at the same time, gave states the right to enact restrictions that do not create an "undue burden" for women seeking abortion. This decision encouraged numerous legal and regulatory restrictions on abortion. These restrictions tend to have a greater effect on women who are at the highest risk of unintended pregnancy, namely poor women and young women. The restrictions also often define the clinical settings where services can be delivered. State regulatory restrictions, including zoning rules, state licensing, and inspection requirements, explain the concentration of abortions in specialized abortion clinics (24).In addition to targeted regulations, abortion restrictions that impede access to services include state-mandated waiting periods and counseling topics, such as showing women sonographic or other images of fetal development, parental involvement for minors, and insurance restrictions. Although many states require some kind of counseling, five states (Louisiana, Mississippi, Utah, Wisconsin, and Indiana) require counseling in person at least 18 h before the procedure, which