Trump gaffes?
Well, lets see.
He claimed he didn’t know who David Duke was. (That was exposed as a lie — someone found a recording from years earlier when he clearly said he knew who Duke was. Maybe it is dementia.)
He said the Continental Army took over airports during the American Revolution.
He endorsed Paul Nehlen, a neo-Nazi, in a congressional primary. (That actually probably wasn’t a gaffe — he really did mean it.)
He called neo-Nazi marchers in Charlottesville “very fine people”.
He called the armed bands bearing swastikas and Confederate flags who took over the Michigan State House “very good”.
He called the 9/11 attacks the 7-11 attacks.
He accused Ted Cruz’s father as having been a conspirator in the assassination of President Kennedy.
He claimed that “Ayatollah Khomeini” was the supreme leader of Iran; Khomeini had died in 1989.
He claimed that Andrew Jackson could have prevented the Civil War; Jackson had died in 1845 and the Civil War began in 1861.
He boasted that because the terrorists had destroyed the World Trade Center buildings, that he himself now owned the tallest building in lower Manhattan.
He claimed that the “1917” Spanish Flu pandemic (1918, actually) brought “World War II” to an end.
According to John Bolton, Trump thought that Finland was part of Russia. (It once was, but it became independent in December 1917.)
I could go on and on but you get the point. The guy who is cognitively impaired is not Biden.