You would think that but you'd be surprised to learn from snowden's leaks that the NSA does "waste time" and resources with a lot of this type of surveillance. We had to pass a new surveillance law just to get the NSA (and FBI) to stop pretending that it needs collect 3-hop phone records (millions) for single investigation and now we allow the to collect "only" 2-hop records (tens of thousands) in one investigation.
The NSA also does a lot of interception for World of Warcraft chats and other stuff like that. And the new FISA law allows 17 agencies (including DEA, IRS, SEC, ETC) to gain access and analyze raw internet data that passed unencrypted through internet cables. Oh and they don't need a warrant to do that either (very likely unconstitutional but still "legal" at the moment). They only need the warrant for the cherry picked data they intend to use in court. And of course we all know the damage against many innocents will already be done by then.
The NSA also does a lot of interception for World of Warcraft chats and other stuff like that. And the new FISA law allows 17 agencies (including DEA, IRS, SEC, ETC) to gain access and analyze raw internet data that passed unencrypted through internet cables. Oh and they don't need a warrant to do that either (very likely unconstitutional but still "legal" at the moment). They only need the warrant for the cherry picked data they intend to use in court. And of course we all know the damage against many innocents will already be done by then.