Question: What is name of the bureau in the United States Department of Treasury that sets revenue rulings?

Related documents: [0]  [DOC] Revenue Rulings are public administrative rulings by the Internal Revenue Service (IRS) in the United States Department of the Treasury of the United States federal government that apply the law to particular factual situations. A Revenue Ruling can be relied upon as precedent by all taxpayers. [END] 
[1]  [DOC] The Internal Revenue Service (IRS) is the revenue service of the United States federal government. The government agency is a bureau of the Department of the Treasury, and is under the immediate direction of the Commissioner of Internal Revenue, who is appointed for a five-year term by the President of the United States. The IRS is responsible for collecting taxes and administering the Internal Revenue Code, the federal statutory tax law of the U.S. Its duty to maximize tax revenue entails providing tax assistance to taxpayers, as well as pursuing and resolving instances of erroneous or fraudulent tax filings. The IRS has also overseen various benefits programs, and enforces portions of the Affordable Care Act. [END]  
Answer: Internal Revenue Service
Internal Revenue Service