If a politician is really serious about lowering tax rates and with the scope and power of the IRS -- really serious -- all they need do is eliminate payroll withholding. Everyone would pay the same amount they do today, but when they are forced -- ultimately at the point of a gun and under threat of debtors prison -- to write a check every three months to the IRS they will be stunned into realization of how much they must pay. They will see a direct relationship between what the government confiscates with what they earn and with their normal living expenses.
Then, when (I'd estimate) 90 percent do not have the money to pay what they must, the tax code will be changed within the month. It may take slightly longer before the IRS megabureaucracy is dissolved.
Simply eliminate payroll withholding. Everything else will follow automatically.
