In an interview with allAfrica.com this week, the Assistant U.S. Trade Representative for Africa, Rosa Whitaker says that more than 92 per cent of African products are now entering the U.S. on a duty-free basis and that AGOA has resulted in over $8bn-worth of imports from Africa and another billion dollars in investment. But the international NGO Oxfam in a report last month entitled "Rigged Rules and Double Standards" attacked rich countries for failing to remove barriers to African trade. Oxfam's Senior Policy Adviser, Kevin Watkins talked to allAfrica.com about whether the U.S. was doing enough.