This Week In Politics: Christie's In-House Cleaning

TRENTON, NJ - NJ Governor Chris Christie speaks to press on March 28, the day after an internal investigation exonerates him from involvement in 'bridgegate.'
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After nearly four months and a million dollars in taxpayer money, Governor Christie's in-house investigation into Bridgegate cleared Governor Christie of any wrongdoing. Port Authority Chairman David Samson resigned. But how much did we really learn? And will those lessons be learned across the bridge in New York? That's our discussion on This Week in Politics.