The continuing leak of classified information by former NSA contractor has renewed a debate about the U.S. government's power to reach secretly into the personal lives of its citizens.

But there is at least one point on which both privacy advocates and security experts agree: The laws governing electronic eavesdropping have not kept pace with technology. ...

A number of lawmakers say there are enough safeguards to protect Americans' privacy. But Sen. Mark Udall, a Colorado Democrat, says there has to be open debate.

"Frankly, I think we ought to reopen the Patriot Act and put some limits on the amount of data that the National Security Administration is collecting," Udall says.