I will never forget the speech Mother Teresa gave at the National Prayer Breakfast in Washington, D.C., back in February of 1994. Full of courage and charity, she said what needed to be said, in a profound and loving way.
An excerpt:

I feel that the greatest destroyer of peace today is abortion, because it is a war against the child, a direct killing of the innocent child, murder by the mother herself.
And if we accept that a mother can kill even her own child, how can we tell other people not to kill one another? How do we persuade a woman not to have an abortion? As always, we must persuade her with love and we remind ourselves that love means to be willing to give until it hurts. Jesus gave even His life to love us. So, the mother who is thinking of abortion, should be helped to love, that is, to give until it hurts her plans, or her free time, to respect the life of her child. The father of that child, whoever he is, must also give until it hurts.
By abortion, the mother does not learn to love, but kills even her own child to solve her problems.
And, by abortion, the father is told that he does not have to take any responsibility at all for the child he has brought into the world. That father is likely to put other women into the same trouble. So abortion just leads to more abortion.
Any country that accepts abortion is not teaching its people to love, but to use any violence to get what they want. This is why the greatest destroyer of love and peace is abortion.
Many people are very, very concerned with the children of India, with the children of Africa where quite a few die of hunger, and so on. Many people are also concerned about all the violence in this great country of the United States. These concerns are very good. But often these same people are not concerned with the millions who are being killed by the deliberate decision of their own mothers. And this is what is the greatest destroyer of peace today – abortion which brings people to such blindness.
And for this I appeal in India and I appeal everywhere – “Let us bring the child back.” The child is God’s gift to the family. Each child is created in the special image and likeness of God for greater things – to love and to be loved. In this year of the family we must bring the child back to the center of our care and concern. This is the only way that our world can survive because our children are the only hope for the future. As older people are called to God, only their children can take their places.
But what does God say to us? He says: “Even if a mother could forget her child, I will not forget you. I have carved you in the palm of my hand.” We are carved in the palm of His hand; that unborn child has been carved in the hand of God from conception and is called by God to love and to be loved, not only now in this life, but forever. God can never forget us.
I will tell you something beautiful. We are fighting abortion by adoption – by care of the mother and adoption for her baby. We have saved thousands of lives. We have sent word to the clinics, to the hospitals and police stations: “Please don’t destroy the child; we will take the child.” So we always have someone tell the mothers in trouble: “Come, we will take care of you, we will get a home for your child.” And we have a tremendous demand from couples who cannot have a child – but I never give a child to a couple who have done something not to have a child. Jesus said. “Anyone who receives a child in my name, receives me.” By adopting a child, these couples receive Jesus but, by aborting a child, a couple refuses to receive Jesus.
Please don’t kill the child. I want the child. Please give me the child. I am willing to accept any child who would be aborted and to give that child to a married couple who will love the child and be loved by the child.
From our children’s home in Calcutta alone, we have saved over 3000 children from abortion. These children have brought such love and joy to their adopting parents and have grown up so full of love and joy….
If we remember that God loves us, and that we can love others as He loves us, then America can become a sign of peace for the world.
From here, a sign of care for the weakest of the weak – the unborn child – must go out to the world. If you become a burning light of justice and peace in the world, then really you will be true to what the founders of this country stood for. God bless you!

The complete text, as well as an MP3 version, is available here.