The Department of the Treasury is an executive department and the treasury of the United States federal government. Established by an Act of Congress in 1789 to manage government revenue, its responsibilities include: producing currency and coinage, collecting taxes and paying bills of the US government, managing the federal finances, supervising banks and thrifts, and advising on fiscal policy. The Department is administered by the Secretary of the Treasury, who is a member of the Cabinet. On February 13, 2017, the Senate confirmed Steven Mnuchin as Secretary of the Treasury.

Answer this question: who handles the money in the us government? Let's give stream of consciousness first:
The relevant information is: Established by an Act of Congress in 1789 to manage government revenue, its responsibilities include: producing currency and coinage, collecting taxes and paying bills of the US government, managing the federal finances, supervising banks and thrifts, and advising on fiscal policy.
So, the final answer is Department of the Treasury.