If, on the other hand, you live in a world where simply crying "Encryption!" is some kind of barrier that magically sanctifies the underlying data, and that it then cannot and should not ever be accessed by anyone other than the data owner...well, then I would ask what you think about the German and Japanese codes in WWII?
I think it's deeply sick that our government or anyone would equate our foreign, Congressionally declared, military enemies locked in nearly unrestrained warfare with the private effects and papers and their electronic equiavlents of it's peaceful citizens.
The law and Constitution (as interpreted and implemented by our system of government) are the constraints -- not specific technological capability.
Disagree. The Constitution recognizes an inherent right - that of a person to be secure in his person and papers from unreasonable search and seizure of his person and those effects. That natural right, along with the natural right to be held personally inviolate (i.e. not tortured) are the dual foundations for the presumption that encryption keys, like secrets ensconced in your memory, are immune for the government's attempts to ascertain them.
What he "wants", when US-based companies hold data that still can technically be accessed for legitimate foreign intelligence purposes supported by our system of law, is that a legal framework should allow for it. When it can't be, it's up to NSA to determine other mechanisms to access that data.
It is impossible to know hat the NSA, or any government agency, actually wants. There is no legal nor oversight mechanism that will force them to disclose that information to you, or me, or even to their Congressional overseers, or even to other members of the Executive branch. They have demonstrated lawlessness at the highest levels and vast dishonesty, using every legal, regulatory, judicial, and yes extra-legal mechanism possible to avoid operating transparently. Whatever the intention, whatever the reason, it is beyond question that civic minded citizens should believe any pronouncement, no matter how clearly worded it appears to be, from the Executive branch. When the Director of National Intelligence says point blank they are not collecting records of millions of Americans, it is not simply a matter of redefining away the words. It's lying. Without punishing those who deceive American citizens and especially Congressional oversight, we must only be left to assume that the NSA operates outside of the realm of the rule of law, and because of that, we must act accordingly.
Even if it means a massive terrorist attack on US soil, even if means the collapse of the government, or invasion, or a mushroom cloud over a major US city, we have to resist the presumption that any agent of the executive acts without oversight and accountability.