U.S. President Donald Trump celebrates his 80th birthday in June, and will do so amid questions about whether his physical health and mental sharpness are on the decline. A memo from his physician that was released by the White House on Friday says Trump remains in excellent health.

Trump, who will turn 80 in June, is the oldest person to assume the presidency.

U.S. President Donald Trump, who turns 80 in June and is the oldest person to assume the presidency, frequently casts himself as more energetic and fitter than Joe Biden, his…