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Abortion rights advocates hold signs during a Pro-Life rally on the steps of the Kansas Statehouse in Topeka, Kan., Tuesday, Jan. 22, 2013. Both sides met on the 40th anniversary of Roe v. Wade. Gov. Sam Brownback has signed a series of tough, anti-abortion measures during his first two years in office. Much to the dismay of abortion-rights advocates, Kansas has been part of a wave in which states with Republican governors and GOP-controlled Legislatures enacted new restrictions on abortion providers. (AP Photo/Orlin Wagner)

Abortion rights advocates hold signs during a Pro-Life rally on the steps of the Kansas Statehouse in Topeka, Kan., Tuesday, Jan. 22, 2013. Both sides met on the 40th anniversary of Roe v. Wade. Gov. Sam Brownback has signed a series of tough, anti-abortion measures during his first two years in office. Much to the dismay of abortion-rights advocates, Kansas has been part of a wave in which states with Republican governors and GOP-controlled Legislatures enacted new restrictions on abortion providers. (AP Photo/Orlin Wagner)

Abortion opponents march in Washington

Thousands of anti-abortion demonstrators march through Washington on Jan. 25 to the steps of the U.S. Supreme Court to protest a landmark decision that legalized abortion.