In 2012, HSBC was the subject of hearings of the U.S. Senate permanent subcommittee for investigations for severe deficiencies in its anti-money laundering practices (see Controversies). On 16 July the committee presented its findings. Among other things, it concluded that HSBC had been transferring $7 billion in banknotes from its Mexican to its US subsidiary (much of it related to drug dealing), was disregarding terrorist financing links and was actively circumventing US safeguards to block transactions involving terrorists, drug lords and rogue regimes, including hiding $19.4 billion in transactions with Iran. This investigation followed on from a probe by the US Federal Reserve and Office of the Comptroller of the Currency found that there was "significant potential for unreported money laundering or terrorist financing".