The Pope's Instruction on Worthiness to Receive Holy Communion...
5. Regarding the grave sin of abortion or euthanasia, when a person’s formal cooperation becomes manifest (understood, in the case of a Catholic politician, as his consistently campaigning and voting for permissive abortion and euthanasia laws), his Pastor should meet with him, instructing him about the Church’s teaching, informing him that he is not to present himself for Holy Communion until he brings to an end the objective situation of sin, and warning him that he will otherwise be denied the Eucharist.
6. When "these precautionary measures have not had their effect or in which they were not possible," and the person in question, with obstinate persistence, still presents himself to receive the Holy Eucharist, "the minister of Holy Communion must refuse to distribute it" (cf. Pontifical Council for Legislative Texts Declaration "Holy Communion and Divorced, Civilly Remarried Catholics" , nos. 3-4). This decision, properly speaking, is not a sanction or a penalty. Nor is the minister of Holy Communion passing judgement on the person’s subjective guilt, but rather is reacting to the person’s public unworthiness to receive Holy Communion due to an objective situation of sin.
The USCCB response on the same matter:
The question has been raised as to whether the denial of Holy Communion to some Catholics in political life is necessary because of their public support for abortion on demand. Given the wide range of circumstances involved in arriving at a prudential judgment on a matter of this seriousness, we recognize that such decisions rest with the individual bishop in accord with the established canonical and pastoral principles. Bishops can legitimately make different judgments on the most prudent course of pastoral action. Nevertheless, we all share an unequivocal commitment to protect human life and dignity and to preach the Gospel in difficult times.
Okay, what's the problem here guys? (I speak to the USCCB now.) Why can't you follow a simple instruction? This paragraph above is ridiculous! It has no teeth, and further demonstrates that the USCCB is nothing more than a paper tiger. (Maybe I should say "paper kitten.") The pope's instructions, (as Cardinal Ratzinger), were simple and clear. Do you think he's changed his mind since becoming pope? Are you planning on forcing him to have to repeat himself? When you pass statements and resolutions like this, is it any wonder why so many Catholic Americans no longer take your organization that seriously?