Rift between pro-life Democrats?

This letter, from New York Democrats for Life board member and State Senator Ruben Diaz, criticizes Kristen Day, executive director of Democrats for Life, for endorsing the recent letter on abortion and religion signed by Catholic Democrats in the House.  Diaz writes:

As a pro-life Democrat and elected official in one of the most liberal cities in the United States, I was shocked and dismayed to read your recent press release supporting a letter written by Rep. Rosa DeLauro and cosigned by mostly pro-abortion Democrats members of Congress. I found it to be deceptive and something I could never embrace.

Most of the letter's signers support unrestricted abortion and have a total disregard for the grave moral disorder in our society. And to me it is obvious that no child could enjoy the programs and policies mentioned in this letter if he or she fell victim to abortion. . . .

. . . Fighting for a good educational system, good health services, job creation, affordable housing, and other important social services equally available to all human beings, are some of the reasons that I am a public servant, however, as I said before, an aborted baby will never be able to enjoy these services. Therefore, it is the duty and responsibility of every good Christian, good Catholic and any pro-lifer to defend the sanctity of life and not allow the sagacity of these signees to distance us from our goals.