The New York Times reported Wednesday that Attorney General Pam Bondi's team at the Department of Justice was unable to build a criminal case over Trump's claims.
The President has pushed that Biden and his advisers broke the law when using an autopen to sign documents, citing his alleged 'cognitive decline,' and paying specific attention to the device's use in presidential pardons.
Autopens are commonly used by presidents to apply their signatures to the overwhelming amount of correspondence they receive.
But with questions about Biden's mental competency, Trump has turned the 83-year-old's usage of the autopen into something more sinister.
'This conspiracy marks one of the most dangerous and concerning scandals in American history,' Trump said in a presidential memo on the subject that he released in June.
But over at the DOJ, veteran prosecutors were wary of the case, the Times reported.
It was assigned to the team working under Jeanine Pirro, the former Fox News host who Trump selected to serve as the US Attorney for the District of Columbia.
Pirro's team of prosecutors had also sought to secure an indictment against the six Democratic lawmakers who appeared in a video pushing servicemembers to not follow illegal orders.
A grand jury refused to indict in that case, making an indictment against Biden or his aides even more unlikely.
Investigators, the Times said, couldn't figure out what law had been broken by the Biden White House's use of the autopen.
The newspaper also noted that prosecutors were unsure if they could prosecute Biden, seeing that the Supreme Court ruled in a case pertaining to Trump that presidents have broad immunity.
But even a case against Biden's aides seemed unworthy, as it never made its way in front of a grand jury, the Times said.
In an interview with the Times in July, Biden said he orally approved all the pardons and commutations he endorsed at the end of his term.
He called Trump and the President's MAGA allies who pushed the autopen conspiracy theory 'liars' and said the autopen was used because 'we're talking about a whole lot of people.'
'I made every decision,' Biden also said.
Trump's push to have his political rivals punished by the legal system comes after he complained throughout the 2024 White House race about the 'weaponization' of the DOJ.
Then, an ex-President, Trump, was indicted in four different cases while running for president again - a historic first.
Since returning to office in January 2025, Trump has demanded that several political enemies be investigated - including former FBI Director James Comey, the Attorney General of New York Letitia James, former National Security Advisor John Bolton and Jack Smith, the former special counsel who brought charges against Trump in two separate cases.
Despite a cancer diagnosis, Trump has continued to go after Biden.
And Trump has sought to make the 'autopen' nickname stick.
In September, as part of his 'Presidential Walk of Fame,' Trump hung a photograph of an autopen on the West Colonnade wall next to the Rose Garden, where Biden's face should have been.
Comment: The House Oversight Panel is also hauling Bondi in on a subpoena related to the limited Epstein Files release. According to reports, thousands of records that had briefly been available online have vanished from the public database. CBS News reported Tuesday that more than 47,000 files - totaling about 65,500 pages - were taken down by late February.