U.S. President undergoes medical checkup: Physician's opinion on whether he is fit to perform his duties properly.

At 81 years old, President Biden is the oldest American president in history. President Biden has begun using a medical device worn during sleep to treat sleep apnea. A Quinnipiac University poll of voters across the country conducted in the middle of this month found that Biden is "too old to serve as president for another four years" 67% of people answered.