Too many old, rural white uneducated, racist, gun-toting people still in the US have too much of a say in elections due to th nature of the voting system. I know I visited almost every state by car in my travels and met alot of locals, and I guarantee you many would not vote for a white woman, let alone one of colour. Their belief aligns exactly with that of an ancient, uneducated, mysogynistic, racist, senile, unempathetic, wannabe dictator criminal, that being Donald Trump. There's a significant base that will always support a Trump-type in the US. In a way it's Republican genius but they've re-opened a bottle they shouldn't have. There's going to be no shortage of 'unwanted' excitement politically from this point on.
Hard to know what USs obsession is with 80yo presidents.