His job. Can you imagine him being forced out like Richard Nixon? The Democrats would love that and no - I wouldn't like to see Bush be impeached but even I have a red line where I have to withdraw my support for our President. For me, our national sovereignty and cohesion as a country is not for sale at any price.
"Show me just what Mohammed brought that was new, and there you will find things only evil and inhuman, such as his command to spread by the sword the faith he preached." -Manuel II Paleologus