I don't think anyone would object if Warren shared a meal with Obama. This public display can be interpreted as an endorsement. However, if Rick Warren uses the occasion of this invocation to call upon God to protect the pre-born, then he will be seen as having done the right thing.
>> However, if Rick Warren uses the occasion of this invocation to call upon God to protect the pre-born, then he will be seen as having done the right thing.
Indeed. Praying for mercy isn’t a bad thing.