Here's a link to an excellent article by Albert Mohler on Abortion and the American Conscience He discusses the hidden agendas behind "pro-choice" advocacy. I recommend it in its entirety.
"The American conscience remains deeply divided over the question of abortion. Tragically, we have never experienced a sustained, reasonable, and honest discussion about abortion in the society at large. One step toward the recovery of an ethic of life would be an honest discussion about the actual agenda behind the push for abortion on demand."