Donald Trump says the 'economy will collapse' and the 'rioters, anarchists and looters' will take over if Biden wins and it would be an 'insult to our country' if Kamala Harris becomes the first female president

Donald Trump has told his cheering supporters in North Carolina that 'the economy will collapse' if Joe Biden is elected in November, warning that 'mob rule' will take over the United States.

Speaking in Winston-Salem on Tuesday night, the president enjoyed riffing off his familiar themes of chaos in Democrat-run cities and the mental stability of his opponent.

Trump also attacked Biden's running mate Kamala Harris, saying it would be 'an insult to the country' is she became the first female president.

Harris is on the ticket as Biden's vice-president pick.

Donald Trump staged a rally in Winston-Salem, North Carolina, on Tuesday night

The president said he had been told 15,000 people were in attendance on Tuesday

'Mexico is paying for the wall,' he said. 'Even though they don't say it.

'We're going to put a toll booth at the border. And maybe do something with remittances,' he said. 

Trump said the wall 'is almost completed' and was 'wired for every single thing you could have'.