You really really just need to raise taxes. Just find a way to sell that to the public (focus on the rich or large corporations or whatever outgroup you want basically)
The problem is that the top 25% isn’t an “out group” in either coalition. You have Facebook PMs who vote blue and guys who own a small plumbing company who vote red both making $1 million+ annually and neither wanting their own taxes to go up. Then there are the guys below them looking up. Over 10% of the country will be in the top 1% of earners at some point in their life. So the guys pulling in a few hundred K as a senior engineer or construction manager don’t want their taxes to go up either.
Okay. Then let’s also reduce what’s spent welfare/benefits by a similar amount, at least we’re not taking money they worked for.
The Peak Year (1944): The 94% rate applied to taxable income over $200,000 (which included a 3% regular tax and a 91% surtax). That $200,000 would be incomes over $3.8 Million today.
The High-Tax Era: Top marginal rates remained above 90% for two decades, spanning from 1944 through 1963.
This is supposedly the era that made America "great".
Aside from a brief blip during WWII, federal tax receipts as a percentage of GDP have been stable at around 17% of GDP, going back to 1950: https://fred.stlouisfed.org/series/FYFRGDA188S. Those high marginal rates never actually raised very much revenue. To close the deficit, we have to get that 17% number up to 23%.
To raise revenue, you need to lower the threshold at which high marginal rates kick in so that you actually capture the fat part of the tax base. About half of all income is earned by people making $100k-800k. That’s around where the heavy tax burden falls in every western european country.
Though most of them only for one year due to temporary revenue, so it's not that rational.