Two U.S. senators are asking the powerful Senate Judiciary Committee to get Facebook CEO Mark Zuckerberg to testify before Congress. They want Zuckerberg to explain how Facebook handles our personal information and how it let the political data firm Cambridge Analytica harvest detailed information on 50 million Facebook users without their permission. The last time Facebook was asked to appear before Congress, Zuckerberg and Facebook Chief Operating Officer Sheryl Sandberg sent their legal team instead. Marketplace Tech host Molly Wood spoke with Republican Sen. John Kennedy from Louisiana, one of the senators who penned a letter asking Zuckerberg to testify, about what he’d like to hear from Facebook.