Planned Parenthood

Conservative groups want the gallery to take down the bust of Margaret Sanger, who they say was racist because of her support for eugenics.

"I know who Margaret Sanger is, and I know that she believed in eugenics, and that she was not particularly enamored with black people," candidate Ben Carson said of the organization's founder.

Some Republican candidates for president claim they have defunded Planned Parenthood in their states already. But the truth, others say, depends on how you define "defund."

The government spends $500 million a year on Planned Parenthood. Here's where that money goes, where it comes from and how it's used.

Flashback to the 1980s, when President Ronald Reagan tried to restrict funding for Planned Parenthood. Efforts in Congress have continued since then, with the latest focused on fetal tissue research.

The young anti-abortion activist who planned the recent sting videos on Planned Parenthood staff members has ties to larger group that oppose abortion.

Activists say the video of a Planned Parenthood official is evidence the group is selling parts from aborted fetuses, which is illegal. Planned Parenthood says tissue is donated for medical research.

And when the use of intrauterine devices and hormonal implants by young women goes up, the number of unplanned pregnancies sharply drops, researchers find.