idk why Trump is so fixated on Biden when he's in unstable condition. Everybody knows Biden is unfit to run presidency again due to his dementia. Trump wants to humiliate his long lost rivalry because he's easy to make fun of and bully on anytime. Kamala is pretty sharp on response to any criticism from her haters and Trump can't even attack her back with intellectual words except throwing racial slurs and sexism to lower her self-esteem. Compare to Nikki Haley, Nikki is tooooo soft.