We've been here before, or have we? Just six weeks ago was the tenth anniversary of the USA listing Banco Delta Asia of Macau and Hong Kong as being "of primary money laundering concern." But there was scant evidence of wrongdoing by BCA and what there was turned out to be largely made up. Is the Bank of Dandong, a mainland Chinese bank, any more culpable or is the USA back on the track of weapons of monetary destruction that don't really exist?