Michael Hayden : It 's good for us to keep balance between privacy and security . Former NSA director says much has been misunderstood in recent debate on agency . He says Americans are only surveilled when in contact with foreign countries . Hayden : Violations of rules were discovered by NSA , represent tiny fraction of them .
Michael Hayden : It 's good for U.S. to discuss balance between liberty and security . Former NSA director says much has been misunderstood in recent debate on agency . He says Americans are only surveilled when in contact with foreign agents . Hayden : Violations of rules were discovered by NSA , represent tiny fraction of communications .