US Democratic presidential candidate Joe Biden and his Vice Presidential pick Kamala Harris have appeared on stage to launch their campaign for the White House. Mr Biden announced he picked Senator Harris yesterday. She's a Senator for California and the first black woman and South Asian American to serve in the role. The duo have today appeared on stage in Delaware to launch their campaign for the White House. Mr Biden says a Biden Harris administration will step up and provide action on the coronavirus pandemic, climate change, and a number of systemic issues facing America. Dr David Smith, is a senior lecturer from the U-S Studies Centre at the University of Sydney and he spoke to ABC’s Sandy Aloisi.