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Gov. Sam Brownback speaks during a pro-life rally on the steps of the Kansas Statehouse in Topeka, Kan., Tuesday, Jan. 22, 2013. His remarks came on the 40th anniversary of Roe v. Wade. 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)

Gov. Sam Brownback speaks during a pro-life rally on the steps of the Kansas Statehouse in Topeka, Kan., Tuesday, Jan. 22, 2013. His remarks came on the 40th anniversary of Roe v. Wade. 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.