Is the tax man looking through your old emails? The Internal Revenue Service believes that it does have the right to do that without a warrant.

FOX News Radio's Rich Johnson has details from Washington:

An internal IRS handbook told investigators that internet users don't have the expectation of privacy when it comes to unopened emails, or those older than six months.

But the American Civil Liberties Union says: Not so. It contends the IRS is violating the Fourth Amendment by opening emails without warrants.

Colorado Democratic Senator Mark Udall calls the practice 'an affront to our fundamental right of privacy.' He wants Congress to overhaul the law that governs law enforcement access to emails.

In Washington, Rich Johnson, FOX News Radio.

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Editor's Note:  The IRS released a statement saying: 

"Respecting taxpayer rights and taxpayer privacy are cornerstone principles for the IRS."  "Our job is to administer the nation's tax laws, and we do so in a way that follows the law and treats taxpayers with respect." "Contrary to some suggestions, the IRS does not use emails to target taxpayers. Any suggestion to the contrary is wrong."