What's behind Elon Musk's massive effort to elect Trump

The world’s richest man, Elon Musk, is now a powerful mega donor for Donald Trump. Musk is using his vast resources to campaign for him in Pennsylvania and taking aggressive measures for Trump in other key battleground states. Some of those moves are raising major legal and ethical concerns as well. Geoff Bennett discussed more with New York Times investigative reporter David Fahrenthold.

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