. the company 2019s u.s . subsidiaries file financial statements prepared in accordance with statutory accounting practices prescribed or permitted by insurance regulators . statutory accounting differs from gaap in the reporting of certain reinsurance contracts , investments , subsidiaries , acquis- ition expenses , fixed assets , deferred income taxes , and certain other items . the statutory capital and surplus of the u.s . subsidiaries met regulatory requirements for 2008 , 2007 , and 2006