He is the author of American Fascists: The Christian Right and the War on America
There is likely confusion over this idea that Fascism is threatening to take over the U.S.A. After all, the Fascists were defeated in World War II weren't they? Hmm...
Fascism is just a political strategy just like Terrorism is just a military (and political) strategy. Both strategies can be employed by different people and groups. One need not be a Nazi to be a Fascist, just as one need not be al Qaeda to be a Terrorist. Oh, and one mans terrorist is another mans freedom fighter.
In any case back to the interview.
Chris Hedges says his book came from anger at the perversion of Christian theology "into something that is the very antithesis of certainly what Jesus preached in the Gospels". He describes a group of people who have taken over fundamental christianity and steered it into political activism with the goal of establishing some kind of Christian state. They must not have read the U.S. Constitution or otherwise ignored the part guaranteeing separation of Church and State.
In What is Fascism, and where is it now? and Corporate Fascism is ruling America? I tried to answer the question of What is Fascism. This is because Fascism is one of those political words that gets tossed around freely without it being clear what it means. What I came to before is that Fascism is about grabbing as much power as possible, and that to do so one has to be ruthless in stomping out any and all enemies. If the fascistic movement has any ideology it generally is discarded on the road to gaining absolute power.
Perhaps that's what Chris Hedges is pointing to -- Christians who decided to gain power so they could steer the U.S. back to a more spiritual ground, and instead they lost sight of their goal on the way to achieving the power required to achieve their original ends.