How the U.S. is responding to foreign election interference

U.S. elections continue to be a target of foreign interference. Microsoft announced Thursday that Russia, China and Iran are all trying to hack campaigns and officials. The news comes one day after a whistleblower from the Department of Homeland Security claimed he was urged to downplay the Russian threat and skew intelligence reports. Nick Schifrin and Amna Nawaz join Judy Woodruff to discuss.