On the Senate floor Sunday, Sen. Rand Paul forced the temporary expiration of key parts of the Patriot Act.
The Senate reconvenes Monday to consider a House bill that would limit the government's ability to sweep up American's telephone records.
That's the current state of play when it comes to the political debate over the NSA's bulk data collection programs, but what about tomorrow's tools for monitoring and mapping communications?
Some of that technology is being developed right here at MIT.
Michael Stonebreaker, co-founder of the MIT Intel Science and Technology Center for Big Data.
This segment aired on June 1, 2015.