I request every Catholic, whether American or otherwise, to send a letter to President Obama and tell him this (in your own words):
Dear Mr. President,
I am a Catholic, and I was shocked and offended by your speech at Notre Dame. I cannot believe that a President of the United States would attempt to change Catholicism, to tell Catholics that they can dialogue on abortion. The Catholic Church has taught for nearly 3000 years that abortion is an intrinstic evil (evil by the very nature of the act), and as such, it cannot be negotiated with (Catholics cannot approve of abortion of any kind under any circumstances). I hope you will not attempt to change Catholicism anytime in the future. I will keep you in my prayers.