TANIS BUJAKERA and AARON ROSS THE Democratic Republic of Congo (DRC)'s Senate has rejected a request by prosecutors to lift former Prime Minister Matata Ponyo Mapon's immunity so they could indict him for his role in a failed agriculture project in which investigators say $200 million disappeared. Prosecutors hoped to charge Matata, who served as the DRC's prime minister under former President Joseph Kabila from 2012 to 2016, with fraud, misappropriation of funds and dereliction of duty in connection with the project. Matata has denied wrongdoing, including any responsibility for the missing funds. Matata hailed the project, known as Bukanga…