Criminal and tax evading funds are idle and non-productive. Their injection, however surreptitiously, into the economy transforms them into a productive (and cheap) source of capital. Why is this negative?
A multilateral, co-ordinated, effort (exchange of information, uniform laws, extra-territorial legal powers) is required to counter the international dimensions of money laundering. Many countries opt in because money laundering has also become a domestic political and economic concern. The United Nations, the Bank for International Settlements, the OECD's FATF, the EU, the Council of Europe, the Organisation of American States, all published anti-money laundering standards. Regional groupings were formed (or are being established) in the Caribbean, Asia, Europe, southern Africa, western Africa, and Latin America.