Mihir Desai, a professor of finance at Harvard Business School, breaks down the brand-new U.S. tax law. He says it will affect everything from how corporate assets are financed to how business are structured. He predicts many individuals will lower their tax burdens by setting themselves up as corporations. And he discusses how the law shifts U.S. tax policy toward a territorial system of corporate taxes, one that will affect multinationals and national competitiveness. Finally, Desai explains what he would have done differently with the $1.5 trillion the tax cut is projected to cost.