The LA Times looks at Huckabee's 23% national sales tax. Here's an interesting excerpt:

Among the early advocates of a national sales tax were members of the Church of Scientology, a group that battled the IRS for years to gain recognition as a legitimate religious institution eligible for tax-exempt status. Church leaders backed the establishment of Citizens for an Alternative Tax System in 1990 to advance the cause of replacing the income tax with a national sales tax.

Eventually, the church won tax-exempt status and the group faded. But the issue was taken up by another group, Americans for Fair Taxation -- better known as Fairtax.org -- founded in 1995 by a group of Texas millionaires.

Click here for the whole article.