The explanation is totally bogus. If they need to track criminals or terrorists then get a court order. The only reason to hack in is to track innocent Americans. Thanks for posting this.

"The ironic part is that Tor was invented at the U.S. Naval Academy as a project meant to help activists overseas evade surveillance by officials of repressive regimes. A good amount of its funding has come from the NSA’s parent agency, the U.S. Department of Defense."