Last year, Australia approved similar laws to those proposed by Health Secretary Andrew Lansley, introducing plain packaging to reduce the attractions of smoking. Three global tobacco giants launched lawsuits saying the rules infringed trademark rights.
Three of the world's four largest tobacco groups, Philip Morris International, British American Tobacco and Imperial Tobacco are challenging the new law in the High Court.
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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.