The US Department of the Treasury (also known as the Treasury) is the primary federal agency responsible for the stability and security of the US financial system. In addition to conducting monetary functions such as federal budgeting, currency production, and taxation, the Treasury oversees aspects of enforcement, economic policy development, and international treaty negotiations. Federal bureaus under the Treasury's purview include the Internal Revenue Service (IRS), regulatory bodies of the Office of Thrift Supervision, the Comptroller of the Currency, and the US Mint. Tim Geithner was confirmed as Treasury secretary in 2009.