>> laura: i love how he milks the applause and looks around. he and michelle became global superstars, inspired millions of americans and of course the other global superstars. >> i was at the u.n. and i heard our president say climate change is the most important issue facing not only this generation but to future generations. >> it made me feel hopeful and proud to be an american. ♪ barack hussein obama >> laura: last night the 2020 candidates were singing a different tune. with our sights trained on joe biden, they decided to pick up key aspects of the obama-biden legacy. >> this mythology that all these folks are in love with the insurance. >> i'm going to go back to president biden because your plan does not cover everyone in america. >> everyone should have access to health care, it's a human