Who would pull Trump's strings in a second Trump administration? Check the Mar-a-Lago guest list.

Donald Trump's Mar-a-Lago resort has become a gathering place for ultra-right extremist organizations and other political actors who recognize the malleability of Trump and want an opportunity to potentially assert themselves on the national agenda through a weak-minded president. David Fahrenthold, investigative reporter for the New York Times, talks with Alex Wagner about how Mar-a-Lago has become a hive of extremists.