I responded to his post by saying:
Unfortunately, you are missing a large part of the issue. While Cheney and Bush would not be my first choices to speak at Catholic Universities, and maybe they should not, that in no way makes it acceptable for Obama to speak at Notre Dame.
Also, you are missing the point that the Church has taught consistently and often from many venues that while Capital Punishment and torture and just war theory are wrong, that Catholics are free to disagree, while Abortion and Euthanasia remain the highest priority. Your balancing act simply does not work.
Excerpt from “Worthiness to Receive Holy Communion - General Principles” L’espresso, June 2004 by Joseph Ratzinger:
“. Not all moral issues have the same moral weight as abortion and euthanasia. For example, if a Catholic were to be at odds with the Holy Father on the application of capital punishment or on the decision to wage war, he would not for that reason be considered unworthy to present himself to receive Holy Communion. While the Church exhorts civil authorities to seek peace, not war, and to exercise discretion and mercy in imposing punishment on criminals, it may still be permissible to take up arms to repel an aggressor or to have recourse to capital punishment. There may be a legitimate diversity of opinion even among Catholics about waging war and applying the death penalty, but not however with regard to abortion and euthanasia.
Many of these people (not him specifically) have mentioned to me that it is great to have a black president and how much that will bring the country together. Where were these people, pray tell, when Alan Keyes ran for President? Of course, a black Catholic, anti-abortion, third degree Knight of Columbus wasn't so heavily supported was he?