Of course their ability has taken a hit. Congress now has their eye on the NSA and they'll be looking to put a new set of policies into place so that they can l

Of course their ability has taken a hit. Congress now has their eye on the NSA and they'll be looking to put a new set of policies into place so that they can look good to their voters. Even Snowden said that all the NSA's activities were dictated by policy. So yeah, maybe at the moment everything is running as normal, but that won't be the case for long. Just remember, if you're a senator banging 14 year olds, you don't want the NSA snooping through security cameras in your office. So in addition to the above point, congress will want to put a leash on the NSA out of self-preservation.