WATCH: Tucker Carlson biographer says Fox imposed broadcast ban on Trump interview

Tucker author Chadwick Moore said a Fox News whistleblower informed him the network would not be speaking about former host Tucker Carlson’s interview with former US president Donald Trump. .“Whatever happens on this show, if Trump breaks news, they can’t mention it,” said Moore in a Wednesday interview on the Benny Show. .“There’s been a policy in place since Tucker was taken off of the air that you can’t say his name on the air.” .Carlson aired an interview with Trump at the same time as the Republican Presidential Debate in Milwaukee on Wednesday. .“But you see, the polls have come out, and I’m leading by 50 and 60 points,” said Trump. .“And, you know, some of them are at one and zero and two.” .The video starts off with Benny Show host Benny Johnson asking about Fox News not acknowledging Carlson’s interview with Trump. .“Don’t they have an obligation to their audience to note that Donald Trump is speaking with Tucker tonight,” said Johnson. .“I don’t think they’ve even mentioned that.” .Moore joked about Carlson being like Harry Potter villain Voldemort. He shall not be named. .Every one at Fox has been told they cannot mention the interview or what it covers. Moore acknowledged there are many great people at Fox. .While he is not talking about the executives, he said there are “a lot of people who see themselves as real journalists.” They take their work seriously. .Moore said the ban is “most frustrating to them.” .“They can’t report on the news all because of this vendetta that the network has against its former top host,” he said. .Fox issued a cease and desist letter against Carlson producing his Twitter series in June because it breaches his previous contract. .READ MORE: Tucker Carlson told by Fox to 'cease and desist' on Twitter.“Fox defends its very existence on freedom of speech grounds,” said Carlson's lawyer Bryan Freedman. .“Now they want to take Tucker Carlson’s right to speak freely away from him because he took to social media to share his thoughts on current events.”