In late 2010, HSBC reached an agreement with the Federal Reserve and the Office of the Comptroller of the Currency, another US financial regulator, to improve its compliance with anti-money-laundering rules. The bank said in the filing this week that it is continuing to co-operate with all the enquiries, including one by the US Senate Permanent Subcommittee on Investigations that could potentially see executives at the bank called to testify before Congress.