N.E.H. Hull is a law professor at Rutgers University in Camden, N.J., and co-author of Roe v. Wade: The Abortion Rights Controversy in American History (University Press of Kansas, 2001).

Rita Simon is university professor emerita of justice, law and society for the School of Public Affairs at American University in Washington, D.C. She wrote the book Abortion: Statutes, Policies and Public Attitudes the World Over (Praeger Publishers, 1998).

Jonathan E. Brockopp is associate professor of history and religious studies at Pennsylvania State University. He edited the book Islamic Ethics of Life: Abortion, War and Euthanasia, and he wrote an article on Shariah for the Encyclopedia of Islam and the Muslim World.

Laurence H. Tribe is the Carl M. Loeb University Professor of Constitutional Law at Harvard University. Tribe’s areas of expertise include abortion and church-state issues. He wrote the book Abortion: The Clash of Absolutes.

Jack M. Balkin is a constitutional law professor at Yale Law School and an expert on abortion policy and the First Amendment.

George Annas is professor and chairman of the health law department at the Boston University School of Public Health and an expert on abortion policy, embryo research, stem cells and end-of-life research.

Planned Parenthood Federation of America fights against legislation that limits access to abortions. Contact the media office.

Debra Ness is president of the National Partnership for Women and Families, a nonprofit, nonpartisan organization in Washington D.C., that works to promote quality health care for women, including access to abortion. Contact communications assistant Cindy Romero.

Judie Brown is president and co-founder of the Catholic American Life League in Virginia, which promotes anti-abortion legislation. Contact Paul Rondeau.