As seen on Kudlow on the FOX Business Network! The definitive history of the effect of the income tax on the economy. Ever since 1913, when the United States first imposed the income tax via constitutional amendment, the top rate of that tax has determined the fate of the American economy. When the top rate has been high, as in the late 1910s, the 1930s, 1940s, 1950s, and 1970s, the response of those with money and...