@ican711nm,
So? Why isn't it uniform? Everybody must follow the tax codes with all its ills. As a taxpayer, do you pay the same tax as anybody else earning the same gross income? Why is that? Can you figure it out?
Your "uniform tax rate" is the same for all taxpayers based on all the tax codes.
Income is taxed "uniformly" on Adjusted Gross Income.
All other taxes are based on consumption at "uniform" rates of taxation.
Show us why this is not so?