No warrant doesn't matter, the data can be used in court. The Guardian's leak today [1] proved that the NSA is authorized to keep all data obtained 'inadvertent

No warrant doesn't matter, the data can be used in court. The Guardian's leak today [1] proved that the NSA is authorized to keep all data obtained 'inadvertently' -- e.g. as part of a broad-scale tap, without a warrant -- and to use it later. Specifically, data regarding US citizens. The safest assumption now is that with respect to electronic surveillance in the US, warrants mean nothing and everything is being stored. [1] - http://www.guardian.co.uk/world/2013/jun/20/fisa-court-nsa-without-warrant http://www.guardian.co.uk/world/2013/jun/20/fisa-court-nsa-w...