Vice President Kamala Harris has been grilled by Fox News about Joe Biden’s mental faculties and how she would differ from him if she were to win the presidency in November.

Sky News Washington Correspondent Annelise Nielsen says Democratic presidential candidate Kamala Harris didn’t have a distinct answer to the question on President Biden’s mental faculties.

“They don’t have one, and it is costing them trust on the campaign trail, which is at an alltime low ... enthusiasm is not high,” she said.