FBI Agent Alleges Misconduct in Mueller Probe of Trump Campaign

Whistleblower claims 'let's get him' attitude and political bias permeated the investigation.

Mar. 16, 2026 at 11:49am

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An unnamed FBI agent assigned to the Mueller investigation into the 2016 Trump campaign has made bombshell allegations of misconduct, political bias, and 'overzealous thoughts' within the probe team. The agent claims the team cut corners, broke rules, and had a 'let's get him' attitude toward Trump, including decorating their office with anti-Trump cartoons and drinking on the job.

Why it matters

The allegations, if true, would undermine the credibility and integrity of the high-profile Mueller investigation, which consumed much of Trump's first term as president. It raises questions about the motivations and methods used by the probe team, especially in light of the ultimate finding of no evidence of collusion between the Trump campaign and Russia.

The details

The agent's allegations were made in December 2020 as part of an internal FBI probe into misconduct by a key figure in both the Russia collusion investigation and the Hunter Biden laptop coverup. The agent claims there was 'no authority' to open a case on Trump ally Tom Barrack, that the team chronically abused FISA warrants to monitor Trump advisers, and that a Mueller prosecutor repeatedly violated security protocols. The agent also alleges the team had a 'general atmosphere of bias' led by prosecutor Aaron Zelinsky, who later resigned from the DOJ.

  • The Mueller investigation ran from 2017 to 2019, costing over $30 million.
  • The agent's allegations were first made in December 2020 as part of an internal FBI probe.

The players

Robert Mueller

The former FBI director who served as special counsel overseeing the investigation into Russian interference in the 2016 election and possible collusion with the Trump campaign.

Tom Barrack

A billionaire friend of Trump's and chairman of his 2017 inaugural committee, who was arrested and charged by the Mueller team but later acquitted by a jury.

Aaron Zelinsky

A Mueller prosecutor who the agent claims led an atmosphere of bias in the office, including decorating with anti-Trump cartoons. Zelinsky later resigned from the DOJ.

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What they’re saying

“The American public deserve answers.”

— Chuck Grassley, Senate Judiciary Committee Chairman (Senate Judiciary Committee)

What’s next

Senate Judiciary Committee Chairman Chuck Grassley has requested that the Attorney General and FBI Director provide all relevant emails, files, and personnel records related to the agent's allegations by March 29.

The takeaway

These allegations, if substantiated, would raise serious concerns about the integrity and motivations behind the high-profile Mueller investigation into the 2016 Trump campaign. It underscores the importance of thorough, unbiased investigations to maintain public trust in government institutions.