China has responded positively to U.S. concerns over North Korea’s alleged money laundering and counterfeiting of U.S. dollars, an American Treasury Department official said Friday. Stuart Levey, the Treasury’s top officer for terrorism and financial crimes, didn’t say whether Beijing had made any concrete commitments. Yet China’s support could be crucial for U.S. efforts to isolate and block alleged illegal financial activity by North Korea that is believed to aid its production and export of weapons of mass destruction. Full Story