This year will see a lot of Congressional wrangling over tax cuts, as many provisions of the 2017 Tax Cuts and Jobs Act are set to expire. Do tax cuts actually produce the economic benefits that their proponents claim? In the latest in our Trumponomics series, we hear from Chicago Booth's Eric Zwick, who is part of team that conducted an extensive study of the 2017 law. Did the tax cuts pay for themselves? And what would he do differently?