All five living US presidents expected to come together to mourn Jimmy Carter

Biden set to lead tributes at funeral service but cameras likely to be trained on Trump

Americans are hoping for a rare moment of political unity this week when all five living presidents - including Donald Trump - are expected to come together to mourn Jimmy Carter, who died last Sunday aged 100.

Joe Biden is set to lead the tributes at a funeral service on Thursday at the Washington National Cathedral. He let slip last year that Carter had asked him to give a eulogy (Excuse me, I shouldn't say that," the president admitted).