How Ro Khanna's support for a wealth tax earned him a tech-backed primary challenger

Rep. Ro Khanna, a Democrat in his fifth term representing Silicon Valley, faces a new primary challenge from tech entrepreneur Ethan Agarwal.

Benjamin Fanjoy/Getty Images

• Rep. Ro Khanna, who represents Silicon Valley, is facing a primary challenge backed by tech figures.
• It comes after Khanna publicly backed a wealth tax on billionaires.
• Here's what to know about the race.

Rep. Ro Khanna endorsed a billionaire wealth tax. Now, he's facing a new tech-backed challenge to his reelection bid.