The BBC filmmaker said he sees making the documentary about the "post-Brexit wave of populism" that resulted in the election of the most controversial US President in living memory as an "amazing challenge".
In a pre-election interview last year on Australian TV, Louis Theroux actually predicted that Donal Trump could win the presidency for the same reasons that Brexit happened.

Speaking about his new film project, he says: "It feels like a whole cultural, almost sea change in how the world is part of the post-Brexit wave of populism. The story seems to change every day with Trump. There’s something new bubbling under. It’s hard to get your head around such a big subject.
“The challenge with Trump would be… something so abhorrent that walks on two legs and is a human being, you have to explore where his foibles come from.”
Speaking about his plans for a three-part documentary series about the US for the BBC, Theroux added in an interview with the Mirror newspaper: "Hopefully people will like it. It's good."
In an interview about Trump last year, Louis Theroux told NME: "The threat is real. It’s a frightening symptom of some sort of weird malaise that he could be taken as seriously as he is in America. I’m sure that many well-meaning people who aren’t anything like Donald Trump for some reason see him as a solution to their fears. Some sort of deep rot has set into American society and the political process that means people don’t feel they’re being listened to. And so they go to a reality TV show star for answers.”