Nothing to do with "Silicon Valley", Hilary....
Politicians try but they really are completely out of their depth with technology. As we all know, encryption is an algorithm, an idea that is widely available. You can no more stop an encryption algorithm than stop the wind.
Its quite obvious, though, that they'll use any incident opportunistically to enhance their power. My response to them is if the government can't figure out what's going on with all the tools outlined in the Snowden revelations then they're either clueless (so giving them even more won't make a difference) or they're interested in something that isn't terrorism. (Anyway, the best way to combat things like ISIS is not to create the damn things in the first place.....yes, Hilary, you know exactly what I'm talking about.)