Larry Kudlow on fixing the business tax rates, supply side economics and getting sober

Former adviser to President Ronald Reagan and CNBC contributor Larry Kudlow discusses his role in shaping the Trump tax plan and where Republicans went wrong with the individual side cuts. Kudlow explains why he believes the cutting the corporate rate will raise the U.S. growth rate to 3 or 4 percent, and how trade would be impacted if the United States pulls out of NAFTA. Plus, Kudlow recounts his struggle to get sober to in the 90's and how it was a crucial turning point in his life.