I wouldn't mind throwing in a negative income tax or EITC (or entertaining the idea), but I disagree that equal proportional taxation could be punishing. These are taxes for services that the people voted for. If they're not willing to sacrifice for them, maybe we should be thinking twice about the public services being provided.
The issue is that "equal proportional" taxation is simply not equitable. When you tax the middle and lower classes, you directly impact their ability to survive and improve their lot. When you tax the upper and 1%s, you don't. All taxes disproportionately effect the lower classes more than the upper classes. Every single penny matters to a single mom raising kid(s) on a low wage job (and others similar folks). The same is not true for the upper classes/1%s, or even people just more well off than others, such as myself.
It's as simple as that.
You seem to be afflicted with at least a moderate case of Affluent Male Libertarian disease and clearly don't understand the implications about what you are proposing.
If you tax my business to provide more benefits for low income workers, I'm going to pay my workers less. If you mandate I provide health insurance, I'm going to adjust my worker's pay, benefits, hours to keep costs as close to the original total as I can. If you tax my income more, I'm going to buy less products, I'm going to invest less, I'm going to lower the demand for low income workers. This will drive down wages and benefits for those at the bottom. You're taxing away their future by limiting economic growth, the only
real method of combating poverty. If you're fine with keeping the poor where they're at, by all means keep taxing the producers.
You're taxing them for things that they're using either way, you think because you're avoiding direct taxation the poor are not being affected? The rich aren't really paying for it, that's not how economics works. You're introducing inefficiencies in the market by taxing the rich to provide for the poor, instead of creating an environment where employers voluntarily strive to hire more, raise wages, etc. Look at total compensation drop vs productivity and compare that to the ECI (employee cost index). Regulations, wage controls, and taxes all drive wages down and increase unemployment.
Taxes do not, have not, and will not solve poverty. The problem isn't that the rich aren't paying enough, it's that the total amount paid is a drag on society and a flat tax would distribute that burden equitably onto the actual voters championing these programs. People should have some skin in the game to avoid the tyranny of the majority.
It's called the 16th Amendment. It was added to your precious constitution to do exactly what you claim the constitution can't do. It's there to allow the federal government to levy income taxes how congress and the president see fit. If you don't like it then the amendment needs repealed. It makes your constitutionality argument laughably weak.
I missed you, we always have the best conversations. Congress and the President can tax you however they want, but as far as I'm aware it doesn't allow them to spend it however they want or establish programs that grant them powers not granted to the federal government by the Constitution. It's not mentioned as a role of the federal government in Art 1 Sec 8, and it seems like it'd fall under the 9th and 10th Amendments.