Dr. Anthony Fauci repeatedly invoked the Fifth Amendment during a contentious Senate hearing, prompting legal debate and a push for contempt proceedings from lawmakers concerned about his testimony regarding the U.S. response to COVID-19.

Sen. Rand Paul, R-Ky., chairman of the Senate Homeland Security and Governmental Affairs Committee, announced plans to pursue contempt charges against Fauci after the former National Institute of Allergy and Infectious Diseases (NIAID) director declined to answer more than 100 questions. Paul stated that the committee would hold a vote on contempt, raising a legal question about whether a presidential pardon offers complete immunity.

Fauci was issued a full and unconditional pardon by former President Joe Biden, covering all actions taken between January 1, 2014, and January 19, 2025. This pardon was intended to shield him from prosecution for the actions under investigation by the committee, leaving open only the possibility of charges if he were to lie under oath.

Legal experts offered differing views on Fauci's invocation of the Fifth Amendment. Abhishek Kambli, a former Justice Department official, suggested that the Fifth Amendment privilege may not apply if truthful testimony could not lead to prosecution for the conduct in question. He noted that the Fifth Amendment is typically invoked to avoid self-incrimination, but if a pardon covers the potential offenses, the privilege might be weakened, particularly for straightforward factual questions. Perjury, he explained, requires a knowing false statement, making innocent mistakes less likely to result in charges.

George Washington University law professor Jonathan Turley commented that the legal issues are complex. He indicated that Fauci's main risk would stem from any false statements made during the hearing, especially concerning conduct that may have occurred after the pardon was granted. Turley also pointed to Fauci's decision to deliver an opening statement before invoking the Fifth Amendment as a potential ground for contempt, referencing the Lois Lerner case in 2013, where a similar tactic led to a contempt finding by the House, though not subsequent prosecution by the Justice Department.

Hans von Spakovsky, a senior legal fellow at Advancing American Freedom, argued that while the federal pardon covers federal charges, it does not shield Fauci from state charges. However, he noted that no state had accused Fauci of violating state law. Florida Attorney General James Uthmeier announced a state investigation into Fauci following his testimony. Von Spakovsky posited that the only reason for Fauci to invoke the Fifth Amendment would be to avoid admitting to lying to the public and Congress, as evidenced by his personal diaries.

If the contempt resolution initiated by Paul clears the committee, it would proceed to the full Senate. Passage would require overcoming a 60-vote filibuster. Anthony Fauci testifies before the Senate Homeland Security and Governmental Affairs Committee in Washington, D.C.