From Grover Cleveland to John F. Kennedy and Donald Trump, examples abound of presidential maladies being minimized or kept secret.

Rep. James Comer (R-KY), chairman of the Oversight Committee, demanded that former President Joe Biden‘s physician and White House aides sit for interviews as part of an investigation into Biden’s mental and physical decline.

Joe Biden and Jill Biden have been at each other's sides through celebrations and challenges, such as his recent prostate cancer diagnosis.

She accused the authors of being “irresponsible self-promoting journalists out to make a quick buck” and called their work “a bunch of unoriginal, uninspired lies.”

While Jake Tapper has said he looks back on his Biden coverage with "humility," he faces criticism from the right and left over his new book about the former president.

In the final two years of his presidency, Joe Biden had private moments where he could not recall the names of top aides, had an increasingly limited private schedule, was prone to incoherence and losing his train of thought,

Biden’s alarming comments came during a speech about emissions from oil refineries near his childhood home in Claymont, Del., and which he appeared to blame for his cancer.