Should be called the unfair tax. Sales taxes like this are regressive (again) and unfair to the lowest income groups (again).
We want everyone to benefit from living in the richest country the world has ever seen. Sometimes that could mean someone doesn't do someone's fair share, but there is no excuse for making those who work at the lowest wages pay a disproportionate percentage of their hard-earned wages.
Although I am for a federal sales tax as a replacement for the income tax, I do not fully buy into the FAIR tax as outlined in the book cited above. However, that plan provides for those at the bottom of the income scale by compensating them for federal sales taxes paid.