Professor of Economics and Public Policy at the University of Michigan Justin Wolfers joins Ana Cabrera in our new series "The Professor Is In" to break down the difference between trade agreement and trade deals as President Trump's tariffs cause turmoil with global trading partners. For more context and news coverage of the most important stories of our day click here: https://www.msnbc.com/ » Subscribe to MSNBC: https://www.youtube.com/msnbc » Subscribe to MSNBC on TikTok https://www.tiktok.