Income was not the original basis for raising tax revenue. Only with the rise of Communism did it become a popular foundation for taxation. The Founders believed in taxing consumption, and did not provide for direct, unapportioned taxation in the body of the Constitution. Our current scheme of taxation required an amendment to their brilliant work (the 16th), and it's been a mistake. It's time to end the experiment.
The following is taken from Federalist Paper No. 21, http://federalistpatriot.us/fedpapers/fed_21.html
"...It is a signal advantage of taxes on articles of consumption, that they contain in their own nature a security against excess. They prescribe their own limit; which cannot be exceeded without defeating the end proposed, that is, an extension of the revenue. When applied to this object, the saying is as just as it is witty, that, ``in political arithmetic, two and two do not always make four.'' If duties are too high, they lessen the consumption; the collection is eluded; and the product to the treasury is not so great as when they are confined within proper and moderate bounds. This forms a complete barrier against any material oppression of the citizens by taxes of this class, and is itself a natural limitation of the power of imposing them.
Impositions of this kind usually fall under the denomination of indirect taxes, and must for a long time constitute the chief part of the revenue raised in this country. Those of the direct kind, which principally relate to land and buildings, may admit of a rule of apportionment. Either the value of land, or the number of the people, may serve as a standard. The state of agriculture and the populousness of a country have been considered as nearly connected with each other. And, as a rule, for the purpose intended, numbers, in the view of simplicity and certainty, are entitled to a preference. In every country it is a herculean task to obtain a valuation of the land; in a country imperfectly settled and progressive in improvement, the difficulties are increased almost to impracticability. The expense of an accurate valuation is, in all situations, a formidable objection. In a branch of taxation where no limits to the discretion of the government are to be found in the nature of things, the establishment of a fixed rule, not incompatible with the end, may be attended with fewer inconveniences than to leave that discretion altogether at large."
Thanks Goddess, I was looking for that.