i have met with over 200 oncologists and cancer research centers and philanthropists involved. and what everyone acknowledges privately, and they hope what i can do, i may be the convener. i may be able to bring them all together. >> reporter: let me ask you as we head into the state of the union. is there a moment you're going to remember with the president? >> well, yeah there is one. he may be embarrassed. my -- we were having lunch and it was pretty clear beau was having trouble with his speech. and he still had three months to go, four months to go as attorney general. and my son, beau biden was the most fastidious, guy. and i knew if my son thought he was losing his cognitive ability, he wouldn't stay on. he would resign. thank god he took all these tests. it was affecting his speech