Scrutiny over former President Joe Biden’s decline is already testing 2028 hopefuls, particularly those who were involved in his administration. The announcement that Biden was diagnosed with an aggressive form of prostate cancer on Sunday came amid a fresh reckoning in the party over the former president’s mental acuity and whether he should have withdrawn

The focus on the former president comes as the party needs to look forward rather than backward to exit the political wilderness.

Former President Biden’s cancer diagnosis has done little to quell concerns about his decision to run for reelection, and many in the party acknowledge the issue is likely to dog them as they look

Former President Joe Biden's office says his “last known” prostate cancer screening was in 2014, and he had never been diagnosed with the disease before last week

Doctors not involved in Biden's care said his diagnoses shows the challenges of screening for prostate cancer.