We’ll never fund the Empire with a flat tax. And one that leaves out capital gains, interest, and dividends? Good luck with that.
We can’t fund the empire no matter how many taxes are imposed given Congress’ propensity for out of control spending. We hit the wall a long time ago.
That's a good thing. A flat tax would mean everyone has a stake in the game. People would want to see some connection between what they put in and what the gov delivers. Starving the beast, global gov and war mongering, might be the only way of getting govs to do what they're supposed to do. That would be to benefit the lives of their citizens.
Increase the sales tax and a very low flat income tax rate 12%. And watch the economy go crazy upward.