NEWYou can now listen to Fox News articles!

Dr. Anthony Fauci was caught on a hot mic calling a Republican senator a “moron” during a contentious Capitol Hill hearing on Tuesday.

“What a moron, Jesus Christ!” Fauci could be heard saying after being questioned by Republican Sen. Roger Marshall of Kansas about disclosing his investments to Congress which Fauci, the highest paid federal employee in government, says he has done for decades.

Dr. Anthony Fauci, White House Chief Medical Advisor and Director of the NIAID, participates in the White House COVID-19 Response Team’s regular call with the National Governors Association in the South Court Auditorium in the Eisenhower Executive Office Building on the White House Campus, Monday, Dec. 27, 2021, in Washington. (AP Photo/Carolyn Kaster)

FAUCI, PAUL CLASH OVER ACCUSATIONS OF ‘CHEAP POLITICS’ REGARDING ALLEGED ‘TAKEDOWN’ OF OTHER SCIENTISTS

“As the highest paid employee in the entire federal government,” Marshall, a military veteran and a physician, asked. “Yes or no, would you be willing to submit to Congress and the public a financial disclosure that includes your past and current investments?”

Fauci responded, “I don’t understand why you’re asking me that question. My financial disclosure is public knowledge and has been so for the last thirty-seven years or so, 35 years.”

REPS. COMER, JORDAN EXPOSE NEW FAUCI EMAILS THEY SAY POINT TO COVID-19 LAB LEAK ‘COVER UP’

Marshall then accused “big tech giants” of keeping that information from the public to which Fauci said, “All you have to do is ask for it. You’re so misinformed. It’s extraordinary.”

Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases and chief medical adviser to the president, listens during a meeting with the White House COVID-19 Response Team on the latest developments related to the Omicron variant in the South Court Auditorium in the Eisenhower Executive Office Building on the White House Campus in Washington, Tuesday, Jan. 4, 2022. ((AP Photo/Andrew Harnik))

The two continued to spar before Democratic Sen. Patty Murray of Washington intervened at which point Fauci was caught on the hot mic disparaging Marshall.

Fauci’s office did not immediately respond to a request for comment from Fox News.

CLICK HERE TO GET THE FOX NEWS APP

In the Senate hearing, Fauci also clashed with Republican Sen. Rand Paul accusing him of “distorting everything about me,” which he said is Paul’s “usual fashion.”

Dr. Anthony Fauci, White House Chief Medical Advisor and Director of the NIAID, gives and opening statement during a Senate Health, Education, Labor, and Pensions Committee hearing (Photo by GREG NASH/POOL/AFP via Getty Images | Photographer: Greg Nash/The Hill/Bloomberg via Getty Images)

Paul, a fierce critic of the National Institute of Allergy and Infections Diseases director, accused Fauci of playing a role in smearing doctors from Harvard, Oxford and Stanford who had positions different from his own.

Fox News’ Ronn Blitzer contributed to this report