PBS News Hour S43 E143 July 18, 2018

Wednesday on the NewsHour, President Trump's conflicting statements sow confusion on how the White House views the threat of Russia to U.S. democracy. Also: The risk Russian hackers pose to midterm elections, Commerce Secretary Wilbur Ross under fire, the plant that could reduce pollution's effects in the ocean, why Google has been hit with a $5 billion fine and newly published letters of Nelson Mandela.