The editors of the Daily Mirror and Sunday Mirror have left "with immediate effect" and the papers are moving to a seven-day publishing model, the company announced.
More top news
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.