Section 215 of the Patriot Act expires at the end of next month. It authorizes the bulk collection of American telephone records by the National Security Agency — part of what was revealed by Edward Snowden two years ago. President Obama says it's not really needed to keep America safe and that he's willing to let it expire. But Congress is divided. While Senate Majority Leader Mitch McConnell wants it renewed, a House Committee wants it amended to require the NSA to take court action before collecting some information. With time for action running short, do most Americans understand what's at stake for their privacy? Do they really care?