House Oversight Committee Chair James Comer (R-Ky.) continued to take aim Thursday at former President Biden's White House physician Kevin O’Connor, after the doctor would not answer questions about Biden's health after he was called to testify this week.

"When Joe Biden’s doctor was asked under oath whether he had ever been instructed to lie about Joe Biden's health, he pleaded the Fifth," Comer posted on X Thursday. "When questioned under oath about whether he believed Biden was fit to serve, he again pleaded the Fifth."

"President Trump is right: this is the biggest scandal in Oval Office history," Comer added.

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