Biden goes off-script to thank McConnell for honoring his late son in 2016

President Joe Biden went off-script during his first joint address to Congress on Wednesday to thank Senate Minority Leader Mitch McConnell for a tribute the Kentucky Republican made to Biden's late son, Beau, in 2016.

The year after Biden lost his 46-year-old son to brain cancer, McConnell called on the Senate to rename a bill aimed at accelerating cancer research after Beau Biden. Biden, who was vice president at the time, was presiding over the Senate session. "I'll still never forget when we passed the cancer proposal in the last year I was vice president, almost $9 million going to NIH," Biden said Wednesday night, referring to the National Institutes of Health.