Farage and his team denied Corsi's allegations and told reporters that he has not been contacted by the special counsel.
"I don't know what they're going to charge me with", Corsi told ABC in an interview Monday.
Corsi has been linked to Roger Stone, a Trump confidant who has been a focus of the Mueller probe for months.
The news about Mueller requesting information about Farage was revealed by Jerome Corsi, a conservative author and commentator for the website InfoWars, which is well known for promoting outlandish conspiracy theories.More news: Former ‘Bachelor’ Chris Soules Enters Written Guilty Plea
In any event, Corsi says that while he tried to cooperate with Mueller's team, his "mind was mush" after speaking with prosecutors, and that they set a perjury trap by not allowing him to see various documents and statements they were referring to during his "interrogation".
Corsi said he would not go into detail about why the Federal Bureau of Investigation were asking about Farage. He said he gave investigators two computers, a cellphone and access to his e-mail accounts and tweets.
"Two months, six sessions, probably 40 hours of grilling, [it] reminds me of the KGB or the Gestapo", he opined.
But at the end he said he was "faced with an 8-inch binder... then you're quizzed about all this and they won't show it to you".More news: Athenahealth fetches $5.7B cash buyout offer
He also claimed in the video that "my crime really was supporting Donald Trump", while dipping into John Birch Society-esque rhetoric.
"I don't know specifically what I'm going to be indicted for, but at 72 years old I am facing losing my home and being separated from my family", he said.
The host examined the actions of longtime GOP dirty trickster Roger Stone and conspiracy theorist Jerome Corsi.
Reports indicate that Mueller suspects that Stone was in communications with Assange and gained prior knowledge about his release of the leaked Clinton campaign emails that helped undermine her ultimately failed run in the last few weeks leading up to the election.More news: Raiders losing streak reaches five in loss to Chargers