And this is what I was about to post, but instead of 20-30%, make it 51%. Allow taxpayers to decide where (the broad categories the receipt listed are a perfect starting point) their tax dollars are going. The remaining 49% can be discretionary, let the government decide where that goes: fill in the gaps for items needed, but that no one wants to pay for.

Such a policy would give people a sense of power over the money they're paying. I, for one, would begrudge less the paying of taxes if the monies went to programs important to me.