Biden inauguration: Step forward after bumpy period - Boris Johnson Published media captionJohnson: "It's a big moment for us - we have things we want to do together." The inauguration of President Joe Biden is a "step forward" for the United States, which has "been through a bumpy period", Boris Johnson has said. Congratulating Mr Biden and Vice-President Kamala Harris, the UK PM said it was a "big moment" for the UK and the US and their "joint common agenda". Mr Johnson said he looked forward to working with the US on tackling climate change and the coronavirus pandemic. Making his inaugural address, Mr Biden said "democracy has prevailed".