GAO is required by law to annually audit the consolidated financial statements of the U.S. government. Until the problems discussed in GAO's audit report on the U.S. government's consolidated financial statements are adequately addressed, they will continue to...hinder the federal government from having reliable financial information to operate in an economical, efficient, and effective manner. For the ninth consecutive year, certain material weaknesses in internal control and in selected accounting and financial reporting practices resulted in conditions that continued to prevent GAO from being able to provide the Congress and American people an opinion as to whether the consolidated financial statements of the U.S. government are fairly stated in conformity with U.S. generally accepted accounting principles. Major impediments to an opinion on the consolidated financial statements continued to be (1) serious financial management problems at the Department of Defense. The federal government's fiscal exposures now total more than $46 trillion, representing close to four times gross domestic product (GDP) in fiscal year 2005 and up from about $20 trillion or two times GDP in 2000.