The Department of Justice has issued a subpoena to Nvidia over antitrust practices; shares of the chipmaking giant fell 9% in the session, losing more than any company ever has in a single trading day: $279 billion. Democrat and Harris Campaign surrogate Rep. Ro Khanna (D-CA) discusses ideas to reform the U.S. tax code, including taxing loans related to unrealized gains. Rep. Khanna’s district includes Silicon Valley, its trillions of value to the American economy, and their many wealthy leaders. Elon Musk’s fight with Brazil continues, as does the contractual dispute between DirecTV and Disney, keeping many customers in the dark. Plus, the U.S. Open is underway in New York. Tennis coach for Coco Gauff Brad Gilbert steps off the court to cheer the many Americans in this year’s tournament–and to discuss the ever-rising costs of the iconic Honey Deuce cocktail. Rep. Ro Khanna - 14:08 Brad Gilbert - 27:18 In this episode: Becky Quick, @BeckyQuick Joe Kernen, @JoeSquawk Andrew Ross Sorkin, @andrewrsorkin Katie Kramer, @Kramer_Katie