On Africa 54: U.S. President Joe Biden Tuesday officially endorsed his vice president and presumptive Democratic Party nominee, Kamala Harris, to be the candidate who would face former President Donald Trump, the Republican candidate, in the race to the White House in November. Plus, Sudanese peace talks continue as the Northeast African nation reopens its border with Chad to allow aid into the famine threatened Darfur region. This and more news-related updates on today’s Africa54!