The US government is attempting to block all discussion of structural changes to the World Bank's governance, something which has been repeatedly demanded by Bank critics and promised by ministers at international summits, according to the Bretton Woods Project, a London-based World Bank, IMF watchdog group. A key problem with World Bank and IMF governance structures is that the 46 Sub-Saharan African countries have just two Executive Directors on the Bank and Fund Boards to represent them all, says the Project.