Warren is too sharp a man to not know why Obama has selected him. That makes him morally culpable. Say what you will about other cultural issues like gay marriage or drug use, but a politician who openly supports infanticide is not someone a man of God should be helping in the political sense.
To the whiners on FR who are upset about FReepers being angry at Warren over this: Jesus would certainly have dinner or meet with Obama. However, scripture doesn’t support the idea that He would participate in a political activity that makes evil look good, especially without condemning it in the process. Somehow I doubt Warren will give a speech criticizing Obama’s abortion position during the invocation. *Snicker*
Bingo.