With all the data they have and considering the degree to which they have violated our privacy, it's a shame they do so little with it.

And they are calls from foreigners, to boot. They may not even need to ask the secret courts for permission to record those.

Even the metadata, which they definitely collect, would be very useful.

Because despite all the propaganda, they are not here to protect you, the people but the government or whoever is in power. I'm sure the NSA could have prevented some school shooting but unlike terrorism that threatens the government directly, mass shooters do not.