Catholics have an obligation to work for the common good and the dignity of every person. We see abortion as a matter of civil rights and human dignity, not simply as a matter of religious teaching. We are doubly unfaithful - both to our religious convictions and to our democratic responsibilities - if we fail to support the right to life of the unborn child. Our duties to social justice by no means end there. But they do always begin there, because the right to life is foundational.
For Catholics to take a "pro-choice" view toward abortion contradicts our identity and makes us complicit in how the choice plays out. The "choice" in abortion always involves the choice to end the life of an unborn human being. For anyone who sees this fact clearly, neutrality, silence or private disapproval are not options. They are evils almost as grave as abortion itself. If religious believers do not advance their convictions about public morality in public debate, they are demonstrating not tolerance but cowardice.
Most Rev. Charles J. Chaput Archbishop of Denver
New York Times Op Ed