Rep. James Comer (R-KY) was mocked by both Republicans and Democrats Sunday after he called on President Joe Biden’s doctor to testify before the House Oversight Committee. In a letter to Dr. Kevin O’Connor, the House Oversight chair said the committee was investigating Biden’s medical assessment, which stated that he “remains fit to successfully execute the duties of the Presidency.” “The Oversight Committee is concerned your medical assessments have been influenced by your private business endeavors with the Biden family,” Comer wrote, adding that he had “evidence” that connected O’Connor to…