Sen. Ron Johnson is launching an investigation into former President Biden's health, he told Axios. Why it matters: The news of Biden's cancer diagnosis as well as new revelations about the White House's efforts to hide the former president's deteriorating health has reignited attacks from the GOP about Biden's fitness to carry out the duties of commander in chief.

President Donald Trump trusts White House doctors despite Biden's prostate cancer diagnosis. White House press secretary Karoline Leavitt assured reporters that Trump's health is excellent.

As House Republicans prepare to investigate former President Joe Biden’s health and mental fitness while in office, they are increasingly zeroing in on his use of a so-called autopen to sign certain pieces of legislation and executive orders.

The former US president’s office said his "last known" prostate cancer screening was in 2014 amid speculation that he had been hiding his diagnosis. View on euronews

The news of Joe Biden's prostate cancer diagnosis has raised questions about why the disease wasn't detected earlier.