September 5, 2018
Facebook COO Sheryl Sandberg, left, accompanied by Twitter CEO Jack Dorsey arrive to the Senate Intelligence Committee hearing on 'Foreign Influence Operations and Their Use of Social Media Platforms' on Capitol Hill, Wednesday, Sept. 5, 2018, in Washington. (Jose Luis Magana/AP)
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Facebook and Twitter executives pledged on Wednesday to better protect their social media platforms in the 2018 elections and beyond, and told Congress of aggressive efforts to root out foreign intrusions aimed at sowing divisions in American democracy.