The tax code is inefficient on purpose. A simple uniform system is politically infeasible, due to the fact our political system relies on pretending to give special favors to every tailored interest group individually (making the tax code even bigger every time).

We arent at a loss of what to change to make it simpler/optimal. We're at a loss at how to make anyone proposing that not lose the election when everyone else is telling each group they'll lose their special carveous and how about I sweeten the deal some more.