mcconnell called on the senate to rename the bill aimed to accelerate cancer research after beau biden. so the president took a moment last night to thank him. >> i'll still never forget when we passed the cancer proposal, the last year i was vice president. i'll never forget you standing, mitch, and saying name it after my deceased son. it meant a lot. >> mcconnell said it would be fitting to name the bill after someone who would be proud of the then presiding officer. it was nice to see that. it wasn't scripted. i wonder what mcconnell was thinking at the time. a lot going on. our coverage continues right after this.