NEW YORK, Feb 22 — American voters are broadly sceptical that US President Joe Biden is mentally fit to serve a second term, and most do not think his potential general election rival Donald Trump is mentally fit either, according to a Quinnipiac University poll published Wednesday, reported German news agency (dpa).

WASHINGTON, Feb 17 — US President Joe Biden's physician released the results of his medical examination Thursday, saying Biden "remains fit for duty." In a memo, Dr. Kevin O’Connor also said that Biden "fully executes all of his responsibilities without any exemptions or...