Economic policy of the George W. Bush administration finance Social Security and Medicare benefits as well as investments in schools, health, infrastructure, and basic research... [and] generate further inequalities in after-tax income." The Bush administration had claimed, based on the concept of the Laffer Curve, that the tax cuts actually paid for the themselves by generating enough extra revenue from additional economic growth to offset the lower taxation rates. However, income tax revenues in dollar terms did not regain their FY 2000 peak until 2006. Through the end of 2008, total federal tax revenues relative to GDP had yet to regain their 2000 peak. When asked whether the
To each according to his contribution concept also formed the basic definition of socialism for its pre-Marxist proponents, including Ricardian socialists, classical economists, and individualist anarchists. "To each according to his contribution" was a concept espoused by many members of the socialist and labor movement. Examples of this can be found from Ferdinand Lassalle's and Eugen Dühring's statements to Leon Trotsky's writings. However, it was Vladimir Lenin, inspired by Marx's writing on the subject in his "Critique of the Gotha Programme", who claimed the principle to be a fundamental element of socialism within Marxist theory. Libertarian socialist thinkers, such as American anarchist Benjamin Tucker, defined socialism