Billionaire GOP Backer Robert Mercer Used Offshore Profits to Fund Breitbart & Attacks on Clinton

A major new investigation by The Guardian based on the Paradise Papers shows how billionaire Robert Mercer and his family built a $60 million war chest for conservative causes inside their family foundation by using an offshore investment vehicle to avoid U.S. taxes. The report traces the money directly to future White House chief strategist Steve Bannon of the far-right news outlet Breitbart Media. We speak with Jon Swaine, senior reporter for The Guardian.