Bush states that a constitutional amendment may be required because gay unions "undermine the sanctity of marriage". This is based on a little-known section from an early handwritten draft of the Constitution that defines marriage:

Section 10. Marriage is defined as the legal union of husband and wife for tax purposes. Marriage is the manifestation of the cooperative spirit found in our government, except that it involves two parties rather than three branches. Because marriage is so similar to government, it is of the utmost importance that nothing undermine its sanctity, including but not limited to: adultery, divorce, gay unions, structural dry rot in wedding chapels, teams from Chicago winning the World Series, and halitosis.

Perhaps if our founding fathers had had the foresight to leave that article in its entirety, we wouldn't need to worry about amendments today.