THE Biden administration plans to tap the African diaspora in the United States to bolster trade with Africa, a U.S. official has said, in a push to work with people who understand "social nuances" on the continent. Working with diaspora-owned enterprises is part of the revival of Prosper Africa, an initiative begun by former President Donald Trump in 2018 that the Biden administration aims to make the "centerpiece of U.S. economic and commercial engagement with Africa." Speaking at the U.S.-Africa Business Summit on Wednesday, U.S. Deputy Secretary of Commerce Don Graves said the diaspora can overcome a major impediment to…