 In September 2005, immediately following the September 19 agreement, relations between the countries were further strained by US allegations of North Korean counterfeiting of American dollars.The US alleges that North Korea produces $15 million worth of supernotes every year, and has induced banks in Macau and elsewhere to end business with North Korea.In 2007, an audit by Ernst & Young found no evidence that the banks had facilitated North Korean money-laundering.