I know a simple way the sheer bulk of the tax code -- its complexity, in numbers of rules, words or exceptions -- could be trimmed by perhaps 70% or more, without much political pain or obstructionism! Because the method is designed to be mostly politically neutral. It does not aim at some utopian fantasy (like the Flat Taxers rave about.) It gores only a few sacred cows. It would be cheap and easy to implement. And almost guaranteed to work! (Only accountants should hate it for the effects on their lucrative business.) Yet, to the best of my knowledge, this method has never been tried, or even proposed. Alas.