I was only talking about the method of taxation authorized by the 16th Amendment.
The method of taxation basically affects Art I, Sec 2, Cl 3; Art I, Sec 8, Cl 1; Art I, Sec 9, Cl 4.
Other than that, the federal government is bound and limited by the enumerated powers of the Constitution, most of which are listed in Art I sec 8. If we pared down the unconstitutional 80% portion of the feds, a flat tax of 10%-15% would be viable which would launch our economy into the stratosphere and turn the IRS into a storefront.
Obamacare is patently unconstitutional, regardless of how SCOTUS spins it. (The Constitution is the Supreme law of the land over the feds including SCOTUS (Art VI, Cl 2).) The Constitution gives the feds no authorization to meddle in our healthcare or insurance. It is astonishing that these jackals have gotten as far as they have with this tyranny and oppression.
Thanks for clarification. :^)