Americans United for Separation of Church and State (AU) have asked the Internal Revenue Service (IRS) to investigate a Nevada church for a possible endorsement of Democratic presidential candidate Barack Obama. According to the AU press release, "Obama spoke during services at the Pentecostal Temple Church of God in Christ in Las Vegas on Jan. 13 in what the Las Vegas Review-Journal described as a 'surprise appearance.'" A blog posting from mydd.com discusses the event. Reportedly, the pastor of the church said, "if you can't support your own, you won't get anywhere." Does this amount to an explicit endorsement?