Joining me now is Lena Khan, a former Federal Trade Commissioner once dubbed Wall Street's number one enemy by Politico. She's an associate law professor at Columbia Law School. She currently co-chairs New York City's mayor elect Zoran Mandani's transition team.Welcome back to the show, Lena. Thank you for being here. >> Thanks so much for having me.>> Two very different stories. Let's start with the the PepsiCo Walmart story. Takes a minute if you don't sort of follow antitrust stuff to get your head aroun ...