[tor-talk] NSA PRISM implications for Tor

[krishna e bera]

https://www.eff.org/deeplinks/2013/06/confirmed-nsa-spying-millions-americans
The report mentions that they have direct access to ISP's servers as
well as service providers such as Microsoft, Google and Yahoo.  Since
most US users end up going to US websites, does this imply that NSA now
has end-to-end correlation available on most US internet users?  I.e. is
Tor's usefulness finished for Americans?