Sen. Tammy Duckworth calls for a 'real, cold-hard facts look' at US' failed 20-year war in Afghanistan

"The key thing is that I want it to be completely nonpartisan, not bipartisan, but nonpartisan," Illinois Democratic Sen. Duckworth explained to The World's host Marco Werman. "I served on the Benghazi Commission, for example. That was bipartisan, but it was highly political."