The U.S. Treasury is the cabinet department of the U.S. government. The main tasks are to handle the financial affairs of the United States, collect taxes, issue bonds, pay off debts, supervise currency issuance, formulate and suggest economic, fiscal, tax and treasury revenue policies, and conduct international financial transactions.

The U.S. Treasury Secretary is the highest official in the U.S. President's Cabinet who is responsible for the U.S. economy and finance. According to the relevant regulations of the United States, the Treasury Secretary is the chief economic adviser to the President of the United States, making suggestions on dealing with economic problems and making the most critical decisions on the economy, finance, taxation and government expenditure of the United States. The first US Treasury Secretary was alexander hamilton, and the current Treasury Secretary is timothy geithner.