"These are unenforceable actions legally," he charged.
"No court will uphold the subpoena as to Bill Barr, because the subpoena seeks to enforce something that is unprecedented in the House - and that is the attorney general answering questions from members of staff in the absence of an impeachment proceeding."
Gaetz claimed the situation is an effort by House Speaker Nancy Pelosi, D-Calif., to appease those in her caucus who want President Trump impeached.
"It has literally never happened before in the Judiciary Committee's history, outside of the scope of impeachment," he said. "I think it's largely because Nancy Pelosi is trying to feed her conference something to show momentum, even though it's not her desire to impeach."
House Democrats earlier Tuesday passed a civil enforcement resolution party lawmakers say effectively holds Barr and former White House counsel Don McGahn in contempt of Congress -- just a day after the House Judiciary Committee postponed its own contempt vote and said the Justice Department was cooperating with its investigation.
Chairman Jerrold Nadler announced Monday he was putting a hold on formal contempt proceedings against Barr, after reaching an agreement with the Justice Department to procure evidence related to the Russia investigation.
"I am pleased to announce that the Department of Justice has agreed to begin complying with our committee's subpoena by opening Robert Mueller’s most important files to us, providing us with key evidence that the Special Counsel used to assess whether the President and others obstructed justice or were engaged in other misconduct,” Rep. Nadler, D-N.Y. said.
Fox News' Brooke Singman and Gregg Re contributed to this report.