Perhaps Rick Warren can influence President elect Obama away from the radical philosophy of the Reverend Wright. I do not fault the Pastor at all for accepting this position; it doesn't sanctify immoral policy in my view. Refusal would be petulant and immature of the Pastor.
I think it’d be fine if Warren wants to counsel President Infanticide or somehow convince him of the error of his ways.
But to participate in his inauguration I think sends the wrong message on killing infants. I don’t think any pastor should give the invocation of any killer of infants’ inauguration.