Months after he called it "totally irresponsible" for President Trump to hold on to classified records, Joe Biden has admitted to storing classified records from his vice presidency at a think tank named after him that has alleged ties to China.

In a Truth Social post, Trump questioned whether the FBI, which raided Mar-A-Lago in August in an unprecedented show of force against a former president, would now do the same to Biden.

Biden's classified doc scandal

Trump said that the records Biden kept were "definitely not declassified" because Biden would not have had the power to declassify them while serving as vice president.

"When is the FBI going to raid the many homes of Joe Biden, perhaps even the White House? These documents were definitely not declassified," Trump wrote.

Biden attorney Richard Sauber admitted Monday that classified records were found days before the November midterm elections at the University of Pennsylvania's Penn Biden Center, which is located a mile from the White House in Washington D.C.

Biden "periodically used this space from mid-2017 until the start of the 2020 campaign," Sauber said, adding the records were found by Biden's attorneys, who promptly handed them over to the National Archives.

"Totally irresponsible"

Attorney general Merrick Garland has tasked the U.S. attorney from Chicago John Lausch with pursuing a preliminary investigation into the documents, which were found in a folder that was in a box with other unclassified papers, CBS reported.

The classified records contained sensitive, top-secret information, according to CNN.

But in September, Biden called Trump's alleged mishandling of similar records "totally irresponsible" and fretted that Trump had compromised intelligence sources.

"How that could possibly happen, how one anyone could be that irresponsible," Biden told 60 Minutes. "And I thought what data was in there that may compromise sources and methods. By that, I mean, names of people helped or et cetera."

Double standard?

Trump, who is facing a Special Counsel investigation from the Biden Justice Department, has complained about being subjected to a different standard than Democrats who stored classified information improperly, such as Hillary Clinton.

Unsurprisingly, pro-Biden pundits and media have rushed to dismiss any comparisons between Biden's conduct and Trump's, noting that Biden, according to his lawyers, immediately notified the National Archives, whereas Trump has been accused of withholding records, although he says this isn't true and that the raid of his home wasn't necessary.

Of course, even if Biden were cooperative with the National Archives from the beginning, that would not resolve the question of whether he violated any laws by mishandling classified records in the first place.

Biden collected nearly $1 million from the University of Pennsylvania while serving as an honorary professor at the college, which has allegedly received millions in anonymous donations from China.