Sen. Ed Markey wants Mark Zuckerberg to testify again. Photo: Zach Gibson/Getty Images
Democratic Sen. Ed Markey called Wednesday for the Senate Foreign Relations Committee to hold a hearing with Mark Zuckerberg on Facebook's sharing of user data with Chinese tech manufacturers that include Huawei, a powerhouse that lawmakers worry is too close to China's government.
The big picture: Markey is a longtime critic of companies that monetize user data, but this issue is also raising concerns among policymakers with more of a national security focus.