President Joe Biden has often and repeatedly claimed that he had no knowledge of or involvement in the questionable foreign business dealings of his son Hunter Biden over the years, a claim that has become increasingly dubious if it ever was believable.

A former Obama White House staffer has now come forward with the shocking assertion that then-Vice President Biden traveled to Ukraine and promised to boost that nation's energy sector with U.S. funds just days after Hunter joined the board of Ukrainian energy firm Burisma Holdings, the New York Post reported.

That former staffer is White House stenographer Mike McCormick, and he has stated that he wants to testify under oath to a grand jury about an alleged illicit "kickback scheme" that involves both Bidens, Ukraine and Burisma, and even current National Security Adviser Jake Sullivan, who at that time was a top aide to VP Biden.

Biden vowed financial aid to boost Ukrainian energy sector when Hunter joined Burisma board

McCormick shared with the Post his story of how he, as a stenographer, was on board Air Force Two on April 21, 2014, on a trip to Kyiv along with Vice President Biden and Hunter, as well as then-aide Sullivan, who delivered a background briefing to reporters but was identified only as a "senior administration official."

In laying out the agenda and priorities for VP Biden's trip to Kyiv, Sullivan noted that Biden would discuss with Ukrainian officials "medium- and long-term strategies to boost conventional gas production, and also to begin to take advantage of the unconventional gas reserves that are in Ukraine."

Asked about what sort of "assistance" the U.S. would provide in that regard, Sullivan replied that it would be "to help them be able to boost production in their conventional gas fields, where presently they aren’t getting the maximum of what they could be," as well as "a regulatory framework, and also the technology that would be required to extract unconventional gas resources; and Ukraine has meaningful reserves of unconventional gas according to the latest estimates."

It's all about the "timeline"

The Post noted that a formal press release was issued on May 12, 2014, to announce that Hunter Biden had joined the board of Burisma, just a few weeks after that trip both Bidens took to Ukraine.

However, a Buzzfeed article at that time, which duly noted the glaring conflict of interest at play for the vice president and his son, reported that business filings in Cyprus, where Burisma's parent company was registered, showed that Hunter had actually joined the board on April 18 -- three days before that trip to Ukraine in which U.S. taxpayer assistance was offered to bolster that nation's energy production, of which Burisma was a major player.

Relatedly, the Post further noted that per its own prior reporting, and less than a week before Hunter joined the Burisma board, he had sent an unusually lengthy and detailed email to business partner and fellow board member Devon Archer that included an in-depth analysis of developments in Ukraine, including in its energy sector, that read as if it had been directly transcribed from a classified government document

McCormick told the Post that he has shared what he knows with the FBI but was ignored and also asked to testify before a grand jury in Delaware where a U.S. Attorney has "been looking at Hunter Biden, but this ties Joe Biden and [Sullivan] into promoting a kickback scheme with Ukraine. It’s the timeline that does it."

"Right now, they are three years into an investigation doing nothing and it seems like they’re stonewalling. I’ll go under oath before anyone who needs to hear the truth about Joe Biden’s criminal activities," he added. "Joe Biden committed crimes in Ukraine in a conspiracy with Jake Sullivan. I’m a witness to that happening."

Biden a "criminal," committed "malfeasance in office"

McCormick, who served as a White House stenographer for 15 years, also shared his story this week on Fox News about being ignored by the FBI and his desire to testify under oath, and said, "Joe Biden is a criminal. He was conducting malfeasance in office to enrich his family. Jake Sullivan is a conspirator in that, and there's more ... Obama officials involved in it, I believe."

In reference to the U.S. Attorney overseeing the federal investigation of Hunter Biden's tax records and foreign lobbying, the former stenographer asserted, "If David Weiss can't have me in front of his grand jury explaining what I know as a witness, that's a fraudulent grand jury. It's a fraudulent use of the American judicial system to cover for Barack Obama and Joe Biden's crimes in office."

For what it is worth, the Post noted that with regard to then-VP Biden's promise of U.S. assistance to boost Ukraine's energy production, and about eight months after that trip to Kyiv in April 2014, Congress passed a bill that provided Ukraine with $50 million to further develop its energy sector and natural gas production, which was obviously quite beneficial to Burisma and its board members.