Walter Isaacson, Perella Weinberg advisory partner, Tulane University history professor and CNBC contributor, joins 'Squawk Box' to discuss SpaceX confidentially filing to go public, Elon Musk's role across his companies,

Elon Musk is requiring advisers working on SpaceX’s IPO to purchase subscriptions to Grok, the AI chatbot owned by the aerospace firm, the New York Times reported Friday, ahead of what’s expected to b...