Shields and Gerson on refugee crisis responsibility

Shields and Gerson on refugee crisis responsibility, Trump’s GOP pledge More

Syndicated columnist Mark Shields and Washington Post columnist Michael Gerson join Judy Woodruff to discuss the week’s news, including Hillary Clinton’s latest interview on her use of a private email server, Donald Trump’s pledge not to run as a third-party candidate, plus who should be stepping up to address the refugee crisis in Europe.

AIR DATE 9/4/15