Rep. James Comer (R-KY), chair of the House Oversight Committee, told Fox News that he had not been in contact with any White House whistleblowers about President Joe Biden's health.
Earlier this week, Comer's committee subpoenaed three of Biden's White House aides in connection to what Republicans alleged was a coverup of the president's mental fitness.
"We believe this has been going on for a long time," Comer told Fox News host Martha MacCallum on Thursday. "We want to know what these three specific staffers knew, and we want to know who, in fact, has been pulling the strings behind the curtain."
Comer suspected that a "shadow government" was running the country.
"Do you have whistleblowers who have come forward?" MacCallum asked.
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"We've heard of specific staffers who have reached out to different Democrats who have leaked it out to various sources, so these people are people of interest to us, but they haven't come forward to us yet," Comer admitted. "I think if Joe Biden doesn't make a decision soon, I would expect to see whistleblowers coming forward."