Rep. Trey Gowdy, R-S.C., slammed former White House chief strategist Steve Bannon Wednesday for talking to members of the press, like "Fire and Fury" author Michael Wolff, but refusing to answer questions from congressional investigators.

"I am frustrated whenever people assert privileges that do not exist," Gowdy told Fox News. "And I am really frustrated when witnesses have all the time in the world to talk to the media on- and off-the-record and they can help people write books, but they can't talk to the representatives that are elected by their fellow citizens."

Bannon appeared before the House Intelligence Committee Tuesday to testify in a closed-door hearing regarding its probe into Russian meddling in the 2016 election.

Bannon, however, told the lawmakers present he had been instructed by the White House to avoid responding to queries about his time as part of President Trump's transition team, when he was in the administration, and since he left the West Wing, because it intended to exert broad executive privilege.

"This is the same person who accused two of the president's family members of committing treasonous acts," Gowdy said. That's a reference to a quote Bannon gave Wolff to describe the June 2016 meeting between first son Donald Trump Jr, White House adviser Jared Kushner, ex-campaign manager Paul Manafort, and a Kremlin-linked lawyer.

"If you are going to accuse somebody of a crime for which you can be put to death, what is your evidence for that?" he continued.

Gowdy, who chaired the House's Benghazi Committee, said he hoped Bannon would be more forthcoming when he re-appears before the panel Thursday.

Bannon has also been subpoenaed by special counsel Robert Mueller for his inquiry into possible collusion between Trump associates and Russia, as well as whether the Trump White House obstructed justice by firing former FBI Director James Comey.