The fact is every European country uses a national sales tax or a VAT. That’s how they help pay for all the social programs.
Amazing concept, paying for what you want.
In addition, VAT taxes are adjusted lower or eliminated on goods and services that are essential to lower income citizens (food, medicine for example). A VAT is a tax on consumption. and there are many ways to adjust them for fairness.
It’s already working for the American left, just look at the comments on Twitter