A judge had been set to issue a ruling on Comey's request to quash the subpoena and halt congressional proceedings - a request that has never previously been granted by a judge in the United States.

The U.S. House Judiciary Committee issued subpoenas for former FBI director James B. Comey and former attorney general Loretta Lynch late Wednesday.

Republicans on the House Judiciary and Oversight and Government Reform panels have argued that Justice officials were conspiring against Trump's election.