Facebook CEO Mark Zuckerberg testifies before the U.S. House Financial Services Committee during An Examination of Facebook and Its Impact on the Financial Services and Housing Sectors hearing on Capitol Hill in Washington D.C., the United States, on Oct. 23, 2019. (Xinhua/Liu Jie)

Facebook CEO Mark Zuckerberg testifies before the U.S. House Financial Services Committee during An Examination of Facebook and Its Impact on the Financial Services and Housing Sectors hearing on Capitol Hill in Washington D.C., the United States, on Oct. 23, 2019. (Xinhua/Liu Jie)