Paul O'Neill, right, and singer Bono wear the traditional outfits presented to them by the villagers of Wamali, in Tamale, northern Ghana, Wednesday May 22, 2002U.S. Treasury Secretary O'Neill and Rock star Bono are in Ghana for 2 days as part of a four-nation African tour in which Bono hopes to convince O'Neill that Africa can and does put western aid to good use