I.R.S. - Internal Revenue Service (United States)
The Internal Revenue Service is the tax collection agency of the United States and administers the Internal Revenue Code enacted by Congress.
In 2009, the IRS processed 225 million tax returns and collected $2-trillion.
Originally called the Bureau of Internal Revenue, the agency changed names in the 1950s.
The Commissioner of the IRS is appointed by the President of the United States.
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