World Trade Organization Director-General Ngozi Okonjo-Iweala on Tuesday applauded U.S. lawmakers calling for the U.S. to focus on growing trade and investment ties with African countries. Okonjo-Iweala joined former Liberian President Ellen Johnson Sirleaf, among others, for a roundtable event hosted by the House Foreign Affairs Committee on Tuesday in honor of Africa Day, which commemorates the founding of the Organisation of African Unity. During the event, Rep. Karen Bass (D-CA), chair of the House Foreign Affairs subcommittee on Africa,...