"Obama is trying to show that all religions can live together."
First, Christianity does not want to co-exist. Christianity believes it is the ONLY way to salvation and other religions are shams.
Second, Rick Warren does not want to co-exist with all Christians, even.
If you read the words of Jesus He was inclusive. Warren is exclusive, excludes large numbers of people from salvation.
Not the man one would want as a positive example of anything at all. Certainly, as I said, deserves a place at the table, should not say Grace.
Arf