WASHINGTON (AP) — President Donald Trump received his first medical checkup as president at Walter Reed military hospital on Friday, undergoing a physical examination amid suggestions in a recent book and by his detractors that he's mentally unfit.

Trump boarded Marine One at the medical facility in Bethesda, Maryland, outside Washington, Friday afternoon after about three hours at the hospital. Trump shook hands with his physician, Dr. Ronny Jackson, and then waved before boarding his helicopter. Later in the day, the president was traveling to Florida for the weekend.

The fairly routine exam...