Mark Zuckerberg Grilled On Data Privacy Before Congress Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email Facebook CEO Mark Zuckerberg arrives to testify before a joint hearing of the Commerce and Judiciary Committees on Capitol Hill in Washington, Tuesday, April 10, 2018. ( Andrew Harnik / AP Photo ) Produced by Ellen Frankman Hosted by Todd Zwillich Produced by PRI and WNYC