An FBI agent assigned to special counsel Robert Mueller's investigation has alleged that the team was saturated with political bias, from anti-Trump cartoons pinned to office walls to alcohol consumption on the job, according to a letter sent by Senate Judiciary Committee Chairman Chuck Grassley to Attorney General Pam Bondi and FBI Director Kash Patel.
The agent, who remains unidentified, described what amounted to a prosecutorial fishing expedition driven not by evidence but by animosity. The motto, according to the agent, was simple: "Let's get him."
Grassley's Sunday night letter laid out what he called the most troubling aspects of the agent's account and requested all emails, files, and personnel records relevant to the allegations by March 29. The senator did not mince words:
"confirms long-standing concerns that political bias rotted the decision-making process within the Mueller team … The American public deserve answers."
The allegations first surfaced in December 2020 when the agent sat for an interview as part of an internal FBI probe into alleged misconduct by Brian Auten, a then-supervisory intelligence analyst who became a central figure in both the Russia collusion investigation and the Hunter Biden laptop saga. But the agent's account went far beyond Auten.
According to reports by The Post, the whistleblower, a "general atmosphere … of bias" pervaded the office, led by prosecutor Aaron Zelinsky. Anti-Trump caricatures and cartoons adorned the workspace. This was not a neutral investigative team following evidence wherever it led. It was, by the agent's own description, an environment poisoned by "overzealous thoughts" and political hostility toward the sitting president.
Zelinsky, for his part, handled investigations into Trump advisers Roger Stone, George Papadopoulos, and Michael Caputo. He resigned from the DOJ in January 2025.
One of the most striking allegations involves the case against Tom Barrack, a billionaire friend of Trump's and chairman of his 2017 inaugural committee. The Special Counsel's Office opened a case on Barrack, arrested him, held him in jail, and charged him with being an agent of a foreign government.
The whistleblower said there was "no authority" for what the team did. And the agent's assessment of the underlying surveillance was damning:
"the target of the investigation [was] cooperating and the [surveillance warrant] would not give us anything more and there was nothing in the past FISA that aided the investigation other than to prove the Target was being honest with the investigators … there were no corroborating facts that tied [the target] to certain facts that we thought were originally true."
Read that again. The FBI's own agent on the case believed the surveillance target was being honest, that the warrants were producing nothing useful, and that the original factual basis for the investigation had fallen apart. The team pressed ahead anyway.
Barrack, now 78 years old, was acquitted by a jury in 2022. He now serves as U.S. ambassador to Turkey. The acquittal tells you everything about the strength of the government's case. The arrest tells you everything about the team's intentions.
The whistleblower's account also touches on Kevin Clinesmith, the FBI lawyer who pleaded guilty to doctoring an email that underpinned a FISA warrant application targeting Trump adviser Carter Page. The agent recalled that when attempting to send a document with corrections, Clinesmith responded bluntly: "We can't send this." The DOJ subsequently decided the corrections weren't needed.
Clinesmith was sentenced to 12 months' probation. He kept his law license after a short suspension. For falsifying evidence used to surveil an American citizen in a case of enormous national consequence, the system barely blinked.
Then there is the matter of former FBI Deputy Director Andrew McCabe, who allegedly "referred to President Trump in a derogatory manner" in an official interview record. When FBI agent Michelle Taylor was tasked with drafting the document, DOJ prosecutors pressured her to "change the tone of the [document] to reflect that McCabe spoke about [Trump] without the negative connotation." Taylor refused. She left the FBI shortly after her assignment to the Mueller team ended.
Consider what that means:
The person with integrity walked away. The institution carried on.
Mueller prosecutor Zainad Ahmad, described as a protege of former Barack Obama Attorney General Loretta Lynch, allegedly violated security protocols repeatedly. The agent's account was specific:
"For example, she brought classified documents to a meeting at WFO [Washington Field Office] without adherence to FBI security policy by bringing her classified notebook to the meeting without a proper carrying bag. What was worse, she came to WFO from her residence, meaning she kept her notebook at the residence."
Storing classified materials at a personal residence and transporting them without proper security measures is not a minor procedural oversight. It is the kind of conduct that would end careers in other contexts. For members of the Mueller team, it apparently merited no consequence at all.
Mueller's investigation ran until March 2019 and cost taxpayers more than $30 million. It found no evidence of collusion between the 2016 Trump campaign and Russia. In May 2023, special counsel John Durham released a report describing the entire Trump-Russia probe as "seriously flawed," concluding that the FBI "discounted or willfully ignored material information that did not support the narrative of a collusive relationship between Trump and Russia."
The Durham report established the institutional failure. The whistleblower's account now puts faces, names, and specific conduct behind it. This was not a case of well-meaning investigators who came up short. It was a team that:
Every one of those bullets represents a failure that would have destroyed an ordinary federal employee's career. For the Mueller team, it was Tuesday.
Grassley's March 29 deadline for records from Bondi and Patel will determine whether this remains a letter or becomes an investigation with teeth. The allegations are detailed enough and specific enough to warrant a full accounting. Names have been named. Conduct has been described with the kind of granularity that invites document requests, depositions, and cross-referencing with existing records.
For years, the Mueller investigation was treated as sacrosanct by Washington's permanent class. Questioning its legitimacy was branded as obstruction. Challenging its methods was called authoritarian. The media wrapped it in a halo and dared anyone to touch it.
Now, an agent who was inside the room is telling the country what it looked like from the other side of that halo. Anti-Trump cartoons on the walls. Drinks are poured during work hours. A target cooperating honestly, while investigators applied for yet another warrant they knew would yield nothing.
The American public, as Grassley put it, deserves answers. They've waited long enough.
