"One is that a flat tax is regressive meaning that it penalizes lower income earners by taxing them at the same rate as higher earners. But I think we are all c

"One is that a flat tax is regressive meaning that it penalizes lower income earners by taxing them at the same rate as higher earners. But I think we are all coming to realize that the current system may be even more regressive since most wealthy people find ways to pay lower tax rates." So change the current system to prevent wealthy people from paying lower rates, don't just move the goalposts and call it a goal. The fact that more money often means you can pay lower tax rates doesn't mean those people shouldn't be paying higher tax rates, just that the current laws aren't doing a good enough job at getting them to pay higher rates.