David Sacks, a venture capitalist and Silicon Valley insider, is a former PayPal chief operating officer who is also known for hosting a hit podcast. In March 2026, he concluded his tenure as the White House’s “AI and crypto tsar”, a role limited by federal rules to 130 days of service per year. Transitioning from this position, Sacks planned to co-chair the US president’s Council of Advisers on Science and Technology.