Article continues below advertisementIn an awkward moment during a speech in Miami on Wednesday, November 5, Donald Trump mixed up South America and South Africa. During a rant about communism, the president, 79, expressed sympathy for Miami citizens for dealing with an influx of Cuban immigrants who fled to the city to escape the communist Castro regime - but he confused South America with South Africa, fumbling his words yet again amid ongoing claims he's not mentally fit to lead.