I must have been looking at old data, but it looks like $1.9 trillion in FY2026. So that's 6.5% of GDP rather than 4% like I said above. Taxes as a percentage of GDP is currently about 25%, so going up to 31.5% would be a 26% jump. Not great, but not catastrophic.

But I agree that if we raised taxes we would just spend more. :(