[NYDave]

I would definitely favor a consumption tax provided it could be implemented such that the IRS and all state and local income tax agencies would be abolished (I can dream, can't I). This would bring in revenues from the underground economy, the criminal economy and anyone who might be travelling in the US from another country.

[ancient_geezer]

I would definitely favor a consumption tax provided it could be implemented such that the IRS and all state and local income tax agencies would be abolished (I can dream, can't I).

Well I suppose a tax could be enforced the way George Washington did it instead.

George Washington's Proclamation Whiskey Rebellion August 7, 1794:
http://www.yale.edu/lawweb/avalon/presiden/proclamations/gwproc03.htm

George Washington's address on October 20 1794
to General Lee at Bedford, PA

Washington LED Federal troops into Western Pennsylvania enforcing the federal tax of the time.

The IRS can go, with no problems, simply let states administer the federal tax system. You don't however expect a tax system to be totally without an administrative department do you? If so, I wouldn't hold your breath while waiting if I were you.

This would bring in revenues from the underground economy, the criminal economy and anyone who might be travelling in the US from another country.

Not without adequate means of collection and enforcement.