Some on the Christian Left would like to pretend that they are pro-life while essentially supporting politicians and policies that are pro-abortion. (More on that general topic here.) In this interesting article, Michael New discusses this, and sums up this way:
It seems that any concerns about abortion raised by Catholic Left groups like Catholics in Alliance for the Common Good and Catholics United are nothing more than rhetorical arm-waving. Technically both groups are nominally pro-life, but neither group has once criticized the Obama administration for pursuing policies which undermine the sanctity of human life, such as rescinding the Mexico City policy, repealing the Dornan Amendment, and ending the federal ban on funding on embryonic-stem-cell research.
However, health-care reform is more visible than some of these other initiatives. Furthermore, there is a good chance that if health-care reform is passed, the Department of Health and Human Services will be issuing reimbursements for abortions. To fend off future criticism, the Catholic Left probably saw a need to issue some statements to purchase itself some political cover.
Yep.