What makes you think they don't already??
"Make it a flat tax for businesses and a commodity-less consumption tax for the little people."
How about NO separate tax on businesses, and a national sales tax anything except food, housing, and prescription drugs. Both businesses and individuals pay the sales tax.
Yeah, I know but a flat tax on anything prevents getting out from under paying taxes through exceptions and deductions.
The first thing that happens with a new tax plan is that liberals begin trying give breaks to the poor which defeats the whole purpose of a flat tax.