Democrats said they are planning to re-interview witnesses who provided testimony to the House Intelligence Committee following Thursday’s news that President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE’s former personal attorney Michael Cohen pleaded guilty for misstatements he made to Congress.

“I think it may just be the tip of the iceberg,” Rep. Joaquin Castro Joaquin CastroPompeo accused of stumping for Trump ahead of election Florida Democrat asks FBI to investigate anti-Semitic, racist disinformation Hispanic Caucus members embark on 'virtual bus tour' with Biden campaign MORE (D-Texas) said in an interview with Hill.TV, referring to other witnesses who “have not been fully truthful” in their testimony before the House and Senate Intelligence committees’ investigations into Russian interference in the 2016 election.

House Democrats will have investigative and subpoena powers in January when they take control of the chamber.

When asked if other witnesses might have lied, Rep. Jackie Speier Karen (Jackie) Lorraine Jacqueline SpeierOvernight Defense: House to vote on military justice bill spurred by Vanessa Guillén death | Biden courts veterans after Trump's military controversies House to vote on 'I Am Vanessa Guillén' bill Overnight Defense: Trump's battle with Pentagon poses risks in November | Lawmakers launch Fort Hood probe | Military members can't opt out of tax deferral MORE (D-Calif.), another member of the House intel panel, told Hill.TV: “Yes, I think there’s no question.”

“We haven’t decided who we are going to call back, but there are a number of people we are confident lied to Congress that need to be called back,” she added.

Castro named one potential witness: Roger Stone Roger Jason StoneThe agony of justice Our Constitution is under attack by Attorney General William Barr Justice IG investigating Stone sentencing: report MORE.

“Based on what I heard, when we were listening to witnesses in the investigation, and what has come out in media reporting, there are inconsistencies with others,” he said. “One of them is Roger Stone.”

Between now and January, Democrats will need to scour transcripts of the earlier interviews to look for discrepencies, according to Rep. Jim Himes James (Jim) Andres HimesMany Democrats want John Bolton's testimony, but Pelosi stays mum SEC's Clayton demurs on firing of Manhattan US attorney he would replace Democrats face tough questions with Bolton MORE (D-Conn.), another member of the Intelligence Committee.

“We’ve taken hundreds of hours of testimony,” he said. “I think we need to go back to that testimony, look at it in light of the new facts and, by the way, make it public and provide it to the special counsel, because I doubt very much that Michael Cohen is the only one who lied to the Congress.”

“He wasn't the only person close to the president who was asked questions about that development,” Himes said.

House Minority Whip Steny Hoyer Steny Hamilton HoyerOn The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline Vulnerable Democrats tell Pelosi COVID-19 compromise 'essential' Anxious Democrats amp up pressure for vote on COVID-19 aid MORE (D-Md.) told reporters Thursday that Cohen’s plea deal is one more reason for Congress to protect special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE’s investigation.

“It appears that there's something to cover up, so we ought to make sure that the Mueller investigation can continue to get to the facts,” Hoyer said. “The American public deserve the truth.”

Democrats and some Republicans may try to include a measure to protect the Mueller investigation in a must-pass spending bill next month.

— Molly K. Hooper