It's been going on for years. Take the taxpayer bailed-out Citibank for example:

1999 "...clients, from Mexico, Nigeria, Pakistan and Gabon, whose sources of income were dubious and who passed millions through Citigroup banks." http://news.bbc.co.uk/2/hi/americas/511951.stm

2009 "Japan raps Citi for lax money laundering controls... bans Citi from retail banking promotions for a month... cites problems with governance, internal controls... Regulatory action follows similar violation in 2004" http://www.reuters.com/article/2009/06/26/citigroup-japan-id...

2012 "A US bank regulator cited Citigroup on Thursday for failing to comply with a federal law that requires banks to establish protections against money-laundering but did not impose a fine." http://www.nypost.com/p/news/business/us_regulator_cites_cit...