At the end of his time in the Presidency, Dwight D. Eisenhower, who left office in January 1961 at the age of 70 years and 3 months, was the oldest President in American history.
Eisenhower made the statement that no one older than himself as he left office should be in the Oval Office.
However, that was not to be, as Ronald Reagan entered the Presidency a few weeks short of 70, and had signs of Alzheimer’s Disease detected by his second term, although he was well protected by his staff who denied any issue, and left office nearly 78 years old. Only years later, was it made clear that he had dementia, and he lived on until age 93, but not even knowing his own wife, Nancy, in the last few years of his life.
And then, we had others even older when winning the Presidency than Reagan, becoming nominees–specifically Bob Dole at age 73 in 1996, and John McCain at age 72 in 2008.
Neither won the Presidency, but the age issue was still there, and then Donald Trump won the Presidency and was seven months beyond the age of 70 when he took the Presidential oath in 2017.
And then, Joe Biden won the Presidency, and took the oath at age 78 in 2021.
And finally, Donald Trump returned to the White House at age 78 in 2025, five months older than Biden was four years earlier.
So the issue of age has become a crisis, and not only for Presidents, but also for members of Congress, and sometimes Governors, who are serving in their 70s and 80s, avoiding retirement.
There is a dire need for some youth in the Presidency, like we had with John F. Kennedy at age 43 in 1961; Bill Clinton at age 46 (and his Vice President Al Gore at age 44) in 1993; and Barack Obama at 47 in 2009.
Sadly, Joe Biden displayed evidence of mental and physical decline, now being debated and published about, and Donald Trump, both in his first, and now his second term, has also shown great evidence of decline.
So in 2028, youth is likely to be triumphant, and all for the better, although one can be sure some political figures who are reaching higher ages, are likely to contend for the Presidential nominations.