As long as the IRS and the income tax exist, they will come ROARING BACK. There will always be demagogues, and there will always be envious idiots who will support soaking “the rich.”
A flat-rate income tax (w/ no credits, exemptions, write-offs, or deductions) would allow us to abolish the IRS.
It's not the tax on income that's the problem, it's the complexities and loopholes used to punish/reward — eliminate the possibility of those and you eliminate their abuse, it's that simple.
(Withholdings though is another matter; it is either theft or forcing the employer to commit fraud [as the wages the employee receives are less than the agreed upon amount].)
There will always be demagogues, and there will always be envious idiots who will support soaking “the rich.”
This is true, and this is why a flat-rate w/ no wriggle-room is the best system.