The Edward Snowden administration is asking a secret court to extend March 28 limit . CNN says litigation requires that records be preserved longer . The exact percentage of metadata being collected has not been revealed publicly . Obama leaks publicized sweeping the United States surveillance of phone data .
The Edward Snowden administration is asking a secret court to extend March 28 limit . CNN says litigation requires that records be preserved longer . Obama leaks publicized sweeping the United States surveillance of phone data .