Biden undergoes annual physical under scrutiny by voters for his mental and physical health. The president, 81 years old and campaigning for re-election, will release the results of the tests in a written report to the nation throughout the day.
Former President Donald Trump and Republicans have focused on Biden's age during the current presidential campaign and questioned his ability to continue serving as president. Biden has repeatedly said he is fine and Democrats have defended him, describing him as healthy. The former president is almost the same age as Biden and has also had several notable memory lapses in recent months.