Q&A: Domestic Surveillance
 How does the surveillance work?
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Officials won't say. But Hayden said the NSA is not vacuuming up vast amounts of communications and running searches on it. In 2003 alone, U.S. citizens spent 200 billion minutes oninternational calls. Ethically and practically, he said, the NSA can't be a "drift net."

Despite his words, opponents are concerned the NSA captures a lot.