Shields and Brooks on Trump trade war risks

Syndicated columnist Mark Shields and New York Times columnist David Brooks join Judy Woodruff to discuss the week’s news, including the Trump administration’s move to impose tariffs on U.S. allies, the president’s move to pardon conservative pundit Dinesh D'Souza, reactions to Roseanne Barr’s racist tweet and Samantha Bee’s vulgar insult, plus veterans are running for Congress in record numbers.