Trump's Defense Against the Bob Woodward Book Echoes His Defense Against Mueller

Social networks like [f500link]Facebook[/f500link] and Twitter have long seen themselves as a new way to connect humanity. But the tech industry has faced turmoil in recent years as companies have grappled with problems ranging from Russian propaganda to complaints of bias against conservatives.

On Tuesday, Facebook COO Sheryl Sandberg and Twitter CEO Jack Dorsey will take a turn in the hot seat as they answer questions from lawmakers on Capitol Hill.