Laffer curve is simplistic in that it assumes a single tax rate and a single labor supply. Actual systems of public finance are more complex, and there is serious doubt about the relevance of considering a single marginal tax rate. In addition, revenue may well be a multivalued function of tax rate; for instance, an increase in tax rate to a certain percentage may not result in the same revenue as a decrease in tax rate to the same percentage (a kind of hysteresis). Furthermore, the Laffer curve does not take explicitly into account the nature of the tax avoidance taking place.
Arthur Laffer He has stated publicly that he voted for President Bill Clinton in 1992 and 1996. Laffer references President Clinton's conservative fiscal and unregulated market policies as cornerstones of his support. Although he does not claim to have invented the Laffer curve concept (Laffer, 2004), it was popularized with policy-makers following an afternoon meeting with Nixon/Ford Administration officials Dick Cheney and Donald Rumsfeld in 1974 in which he reportedly sketched the curve on a napkin to illustrate his argument. The term "Laffer curve" was coined by Jude Wanniski, who was also present. The basic concept was not new; Laffer himself says