system
A chat on subreddit /r/PoliticalCompassMemes
human
The answer is a flat sales tax on all goods, higher than it is today, and no other tax. That along with shrinking the federal government will save the world.
gpt
A consequence of that would be a wealth disparities unknown to modern America.

The poor pay a much larger percent of their income on items with sales tax.  The rich pay much less as they tend to invest or otherwise save much higher rates of their income.

If you make 12M a year, you aren't spending 1M a month on items with sales tax on them

If you are living hand to mouth, most money not dedicated to housing is likely hit by sales tax.

I'd say remove sales tax entirely (it would stimulate consumption to boot)

Raise the AMT, add a wealth tax similar to many other western nations, end the stepped up on basis of taxation, figure out a way to tax people who use rolling loans.