The NSA boasts in training materials that the program, called XKeyscore, is its "widest reaching" system for developing intelligence from the internet.
This is not PRISM - but a different system. The slides are damning, as always.
It validates claims made by Edward Snowden, and makes it clear that US government officials have been lying all along. There's no court order required for any of this - in a supposedly modern democracy. Crazy.