While House Republicans and Trump appear to be aligned in their desire to investigate Biden’s fitness to serve, there is some frustration brewing among congressional committees about how quickly the Trump administration is responding to some of their requests, according to multiple GOP congressional sources familiar with the matter.

Joe Biden's office announced that the former president had been diagnosed with an aggressive form of prostate cancer. CBS News executive director of elections and surveys, Anthony Salvanto, joins to look back at Biden-era polling on how Americans felt about the then-president's health.

Fox News chief Washington correspondent Mike Emmanuel reports on how the GOP is digging into the health of former President Biden on ‘Special Report.’