This is the wrong argument.
A progressive tax structure is inherently immoral. In fact, taxing the exchange of services, such as labor is unconstitutional. Proogressive tax systems are used to manipulate society in ways that the politicians can't with a vote. It is right from the Karl Marx handbook, and anybody who advocates a progressive direct tax on labor should be considered the immoral thug that they are. For that matter, the 'income tax' isn't even really required to raise funds. All we need to do is roll back to 2000 spending levels and we could be done with it.
However, there are constitutional taxes that could in fact be higher. The 'Death Tax' is set at too low a starting point due to inflation since it started it, and the extremely wealthy - who it was intended to tax (like the Kennedy's, Kerry's and others who advocate the middle class pay more) avoid it with off shore trust schemes.
Corporate income tax - which is constitutional could be certainly be higher. Speaking as a business person who is fighting a gross receipts tax in illinois (It will destroy the economy) - I could easily pay a higher marhin on profits if I dd not pay so many taxes and fees on my employees or witheld so much from them for the government.
Progressive taxes are a political tool that has the side effect of stripping us of our position as citizens and turns us into serfs with no due process - as the IRS has excessive powers and is widely documented to lie and cheat in order to persecute innocent Americans.
We are gradually losing our Republic due to poor primary education and univerrsities full of professors who, frankly, should not be teaching.
Now, all this being said:
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