of who paid what percentage of taxes. Including analysis of the regressive impact of sales taxes. Regardless of what individual item they buy the lower income you are the higher percentage of your income you have to spend and do spend. This is not only theory its well documented and accepted by economist. And the more income you spend, the more of your income goes to sales taxes as a percent of your total income. No one who has ever looked at the data on sales taxes seriously disagrees that they are highly regressive. Try any text or economic analysis.

As for which taxes conservatives have cut or advocate cutting, read their journals or listen to their speakers.