please welcome lawrence tribe.pplause) professor tribe, thank you so much for being here. >> thank you. >> stephen: okay. you are a big mucky muck in the world of constitutional law. as i said you taught president obama. he also worked for you, right. >> he was my research assistant for a while. >> stephen: was it hard as a young man, was it hard to understand him through that thick kenyan accent? >> it was the hawaiian ago is sent that i found a little hard. >> stephen: really. >> starting every sentence with aloha. >> yes. >> stephen: you also taught chief justice roberts. >> he was a quieter guy. >> stephen: really? >> yeah. >> stephen: but he spoke volumes with his eyes i bet. it was hard to teach him because those crystal blue things. >> i'm not sure how much of what i taught actually, actually made a difference. >> stephen: really? really. so his, you don't see your influence in his decisions. >> actually, when he was swearing in the president i felt pretty good, you know, one guy i taught swearing the other