New Delhi, April 6 -- Rep. Ronny Jackson (R-Texas) has accused Dr. Kevin O'Connor, President Joe Biden's longtime personal doctor, of covering up the president's cognitive decline during his time in office.

Jackson, who now chairs the House Intelligence Committee's subcommittee on Oversight and Investigations, speaking to The New York Post said, O'Connor will be a key figure in a looming congressional investigation.

"Dr. Kevin O'Connor will absolutely, positively be implicated in the cover-up of this. He is a massive, massive part," Jackson said.

Jackson, who served under three presidents as a White House physician, claimed that O'Connor withheld critical health details from the public and possibly prescribed undisclosed medications to...