Dr Mehmet Oz, administrator of the U.S. Centers for Medicare and Medicaid Services, sparked controversy after suggesting U.S. President Donald Trump "aces the test every single day" during a White House press briefing. The comments came as questions continue to swirl over Trump's health following a week without public appearances just after his fourth visit to Walter Reed Medical Center. While the White House insists the president remains in excellent health, critics and medical experts have raised concerns about omissions in recent health reports and the need for repeated medical evaluations. The debate comes as Trump approaches his 80th birthday and continues to tout his "perfect" cognitive test scores.