I would actually like to hear a concise economic discussion about the effect of sales taxes on the very poor by non-partisan economists who are just about the numbers and are promoting no social change agenda. It's almost impossible though, as everyone has an agenda.

People who are "conservative" seem to be all about "fair taxes", but can't agree on the definition of "fair" in a discussion with anyone who is "liberal".

People who are liberal refuse to include the "underground economy" of cash workers, legal and illegal, into the mix of people who are statistically "very poor". Some "very poor" people seem to live pretty well for people who are "very poor" and are thus judged to be exempt from the imposition of taxes.

It goes around and around in my head, but I can't produce a "fair solution" that would satisfy all in my pondering.