Trump Announces $50 Billion in Chinese Tariffs; Facebook CEO Zuckerberg Apologizes for Cambridge Analytica Scandal; Trump’s Top Lawyer for Russia Investigation, John Dowd, Resigns; Maryland School Shooter Used Father’s Gun; Video Released of Moments Before Uber Self-Driving Vehicle Strikes Woman; Sacramento Police Officers Kills Unarmed Male in Family’s Backyard; Man In Prison for 31 Years, Proven Innocent, Awarded $1 Million; Trump and Biden Talk Smack, Exchange Insults