The Internal Revenue Service doesn't believe the Fourth Amendment keeps the agency from reading your email without a warrant.
Many citizens and legal experts think email and other messaging tools are protected by the Bill of Rights, but documents prepared by IRS attorneys indicate the that it thinks otherwise. The CNET report says the documents state that Americans have "generally no privacy" regarding email, Facebook chats, Twitter direct messages, and similar online communications.
The Fourth Amendment protects citizens from unreasonable searches and seizures by requiring a warrant issued with probable cause.

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