Corporation Tax - even larger loophole advocated

Another study purporting that lower corporation tax leads to higher tax revenues. Problematic as 'other things' are not equal. Cause and effect also not proven. And above all - if author favors even lower (17%?) rate, why should working people be taxed at much higher rates? The lower Corp Tax gets the more it becomes a tax shelter for the Rich. Capital Gains are not taxed on a current basis - no wonder the trend to ever-increasing inequality is intact.
WhyCorporationTaxCutsWork.pdf