
The personal income tax scales have been fiddled with 18 times since 1983, seven of them big changes and 11 fairly small ones.
If income tax rates had not been changed in the past 40 years, and the wages at which they cut in had simply been increased with inflation, personal income tax revenue would be $170 billion more than it is now, there would be no budget deficit, structural or otherwise, and tons of money for government services.