Which organisation was involved in a scandal in the 1980s, concerning the 1982 $3.5 billion collapse of Banco Ambrosiano, has been the subject of a US government report which accused it of funding the Solidarity Polish trade-union and the Contras, and managing US covert funds, was reported in 2009 of being investigated for money laundering transactions worth €180 million (US$ 218 million) and in September 2010 came under investigation for other money laundering charges?