House Oversight Committee Chairman James Comer is demanding that the White House physician appear before Congress to answer questions on President Biden’s “declining mental state,” while also revealing that the doctor has been involved in the Biden family’s business dealings.

Fox News Digital obtained the letter Comer, R-Ky., sent to Dr. Kevin O’Connor on Sunday. Comer is seeking to question O’Connor, given his “connections” with the Biden family, on whether he is “in a position to provide accurate and independent reviews of the President’s fitness to serve.”

Comer wants to know whether O’Connor’s medical assessments of the president have been improperly influenced by his work with the Biden family with the company Americore.