- Friday, July 18, 2025

Former Biden aide Annie Tomasini became the third witness to invoke their Fifth Amendment right to avoid self-incrimination in the House probe of an alleged cover-up of President Biden’s mental decline in office. Here’s what you need to know about the Biden cognitive decline investigation:

The third Fifth Amendment invocation

Tomasini follows pattern of witnesses refusing to testify:



  • Former Biden aide became third witness to invoke Fifth Amendment rights
  • Appeared under subpoena in House Oversight Committee investigation
  • Investigation examines alleged cover-up of President Biden’s mental decline in office
  • Committee probes whether Biden aides acted on behalf of diminished president

The autopen investigation

House examines unauthorized use of mechanical signature:

  • Probe looks at whether aides used autopen to sign pardons and important documents
  • Autopen allegedly used without Biden’s approval
  • Investigation focuses on unauthorized executive actions
  • Committee examining potential conspiracy among Biden confidants

Comer’s statement

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Oversight chairman sees pattern of criminal liability concerns:

  • “Today, the third witness in our investigation…pleaded the Fifth Amendment”
  • “There is now a pattern of key Biden confidants seeking to shield themselves from criminal liability”
  • James Comer, Kentucky Republican, made statement about Friday deposition
  • No lawmakers were present for Tomasini’s deposition

Tomasini’s background

Longtime Biden aide with extensive experience:

  • Served as senior adviser and deputy chief of staff toward end of Biden’s term
  • Worked for Biden since his Senate days chairing Foreign Relations Committee
  • Played big role in his 2020 presidential campaign
  • Served as his traveling chief of staff during campaign
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The specific questions

Tomasini pleaded Fifth to multiple key inquiries:

  • Asked if Biden, family member, or anyone at White House instructed her to lie about his health
  • Asked if she advised Biden on handling classified documents found in his garage
  • Asked if Biden or anyone instructed her to conceal or destroy classified material
  • Asked if she conspired to hide information about Biden family business dealings

The committee’s frustration

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Comer criticizes witnesses for refusing to answer basic questions:

  • “It’s unbelievable that Ms. Tomasini and others refuse to answer basic questions about President Biden’s fitness to serve”
  • “It’s apparent they would rather hide key information to protect themselves and Joe Biden”
  • “There needs to be transparency and accountability”
  • Committee will “continue to pursue the truth and examine options”

The interview schedule

Over dozen former Biden staffers scheduled for testimony:

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  • More than dozen former Biden staffers scheduled for transcribed interviews through September
  • Only one witness has spoken so far: Neera Tanden
  • Tanden served as staff secretary in Biden White House
  • She was authorized to direct use of autopen

Tanden’s testimony

Staff secretary provided limited information about autopen use:

  • Testified she had “minimal interaction” with Biden regarding mechanical signature
  • Said she followed protocol for receiving approval for autopen use
  • Approval came from Biden’s top aides according to Tanden
  • Only witness to cooperate with committee so far
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The previous Fifth Amendment cases

Two other witnesses refused to testify:

  • Dr. Kevin O’Connor, Biden’s former physician, invoked Fifth Amendment rights July 9
  • Anthony Bernal, chief of staff to former first lady Jill Biden, refused to speak July 16
  • Bernal pleaded Fifth at his interview
  • Comer said “other options on the table” if witnesses keep refusing

The Democratic defense

Texas congresswoman defends witnesses’ rights:

  • Rep. Jasmine Crockett, Texas Democrat, was present for O’Connor and Bernal appearances
  • After O’Connor took Fifth, said he was protecting himself from “rogue” Justice Department
  • Crockett is member of Oversight panel
  • Provided defense for witnesses invoking constitutional rights

Trump’s decision-making claims

Current president questions Biden’s role in key policies:

  • Trump argued “there’s no way Mr. Biden was the one deciding to leave the border open”
  • Suggested someone else was making decisions about millions of illegal immigrants
  • Trump questioning who was actually running Biden administration
  • Raised questions about Biden’s decision-making capacity

Biden’s denial

Former president issued statement defending his role:

  • “Let me be clear: I made the decisions during my presidency”
  • “I made the decisions about pardons, executive orders, legislation, and proclamations”
  • “Any suggestion that I didn’t is ridiculous and false”
  • Biden, 82, issued statement after questions multiplied over autopen use

The White House investigation

Current administration launches separate autopen probe:

  • White House launched separate investigation into autopen use during Biden administration
  • Requested documents from National Archives to review Biden’s signature
  • Reviewing to evaluate if autopen was used without Biden’s knowledge
  • Press secretary Karoline Leavitt provided details Thursday

The Trump administration policy

Current White House claims different approach to signatures:

  • Leavitt said Trump does not rely on autopen for White House business
  • “Any document that has legal implications, this president’s signature is on it”
  • “He’s the one making the decisions”
  • “It does not appear that was the truth in the previous White House”

Read more:

Another ex-White House aide, Annie Tomasini, takes Fifth in House probe

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