Worst. Tax cut. Ever. There are excellent arguments for abolishing the double taxation of dividends, though it really ought to be done at the corporate level, not at the individual level. There are Keynesian arguments for countercyclical tax cuts-- implemented to speed growth up and then rescinded during the other half of the business cycle. These might take the form of tax cuts implemented for, say, three years and then repealed... This tax cut is not a short-term stimulus, still less a short-term stimulus to the stock market. The desirable effects that it is supposed to have would all be defeated by a three-year sunset clause; corporations aren't going to restructure their debt practices, their dividends vs. stock buyback practices, for such a short-term provision... Instead, Senators are voting for something that no one's theory or argument predicts will do anything useful.