Comey was fired by Trump in May 2017.

Both Schiff and Comey have appeared on Fox before. Schiff was interviewed on Wallace's Sunday political affairs program on April 21, while Comey was interviewed by anchor Bret Baier on "Special Report" back in April 2018.

The two guests will be interviewed separately on Sunday.

Trump has become increasingly critical of Fox News, arguing earlier this week that the network was pandering to the Democratic Party by hosting progressive lawmakers to discuss the impeachment inquiry.

FoxNews puts losers on like @RepSwalwell (who got ZERO as presidential candidate before quitting), Pramila Jayapal David Cicilline "Don’t get why @puts losers on like @RepSwalwell (who got ZERO as presidential candidate before quitting),and others who are Radical Left Haters," Trump tweeted on Sunday just hours after Wallace hosted Cicilline, a Democratic congressman from Rhode Island, on "Fox News Sunday."

News of the upcoming interview also comes just two days after Comey alleged that “Fox & Friends” canceled a scheduled appearance after the release of Horowitz's report, which criticized the FBI's handling of applications to surveil former Trump campaign adviser Carter Page in 2016 but ultimately concluded that agents were not motivated by political bias when they launched investigations into Trump associates.

A Fox spokesperson said in statement on Monday that Comey "was not booked and was never confirmed to appear on Fox & Friends."