House Republicans want to hear from former President Joe Biden’s doctor and four key aides to discuss his mental and physical decline — after the ex-president, 82, revealed Sunday that he has prostate cancer ahead of the Tuesday release of a bombshell book on the concealment of his waning mental faculties as he sought re-election last year.

The news that former President Joe Biden has been diagnosed with an "aggressive" form of prostate cancer has raised fresh questions about his White House's transparency. Biden's office said in a statement on Sunday that he was diagnosed with prostate cancer on Friday, with the cancer cells having spread to the bone.

President Donald Trump remains confident in White House doctors despite the possibility that they missed a prostate cancer diagnosis for former President Joe Biden while he was in office, the White House says.