The World Health Organisation has said electronic cigarettes should be banned indoors.
In a new report the organisation added that the devices should be regulated to "minimise content and emissions of toxicants".
A World Health Organisation report has found that the levels of toxins emitted by electronic cigarettes - officially known as electronic nicotine delivery systems (ENDS) - is in the range of those produced by ordinary cigarettes, putting non-smokers at risk.
The Democratic presidential candidate may also have shown his cards on his choice of running mate.
The US president also shared a post on Twitter accusing Dr Anthony Fauci of misleading the public over hydroxychloroquine.
Fears over an impending second wave of coronavirus dominates Wednesday’s front pages.