Pro-choice people believe the way to prevent abortion is to make sure women only get pregnant when they want to.
He noted that in a few cases it might prevent abortions by couples desperate not to have a girl.
She also wanted to prevent back-alley abortions, which were dangerous and usually illegal at that time.
"Of course," she adds, "that's if they truly want to prevent abortion."
It has allowed millions of American women to receive necessary reproductive health care, plan their pregnancies and prevent abortions.
American slaveholders also used the plant to prevent abortions.
The group has also been involved in legislative and judicial actions to prevent late-term abortions.
And what about the Republican platform, which since 1980 has featured a plank calling for a constitutional amendment to prevent abortion?
Kelley has said, "We are also poised to make real progress on preventing and reducing abortion.
But the debate over partial birth abortion is not really about preventing late-term abortions.