"There may well be a way to combine strong encryption and lawful intercepts he said, if people are willing to put their heads together."
In the late Victorian era an assumption began to be widely credited and shared, that future leaders would be drawn from among scientists. After all, they are the smartest people, they're trained to establish evidence-based facts, to apply logic and rationality in understanding cause and effect, and are demonstrably the best problem-solvers our species can offer. Plus, they tend to be, if not apolitical, at least aware that cold hard objective fact trumps wishful thinking and political bullshit every single time. You can vote to make π = 3.000 as many time as you like and π won't change for you.
Unfortunately for the human race, scientists recoil with disgust from politics, especially from the early 21st-century strains of politician which have evolved like particularly noxious spirochaetes: there is nothing to like, admire or emulate in creatures which now embody the worst of human vices—people who appear almost to revel in their cowaridce, hypocrisy, mendacity and wilful ignorance. Just look at the bloviating liars and spineless lice busy destroying Britain, or the US GOP, unable to bend over backwards far enough in its invertebrate deceit to protect the worst human being ever to soil the White House. So low has western politics sunk—and no, I haven't much good to report about the state of the "left" either, which also seems largely bought and paid for by corporate money.
So the Christopher Wray, and his wish to "... combine strong encryption and lawful intercepts ... if people are willing to put their heads together"—because despite all the soothing words, he shows that he simply does not get it. And presumably, lacking a math degree, he never will. The politicians who appointed him are not scientists, do not even resemble scientists—indeed, in many respects are the complete opposite of objective seekers-after-truth—so they are neither willing nor capable of comprehension of this issue. We are "led" by ignorant fools, who, even when they employ less ignorant and less foolish people, control their budgets, goals, procedures and to large extent, public statements.
So Mr Wray ultimately comes back to spouting dumb, impossible stuff. He has to say he wants π to be 3.000, but no matter how many "people are willing to put their heads together", it'll continue obstinately and forever to remain an objective unchanged fact.
Even if every public cryptosystem were crippled with a backdoor which miraculously remained a secret, the real villains will simply use an uncrippled one. The options are almost limitless, and the use of advanced steganography in a world where 2,000,000,000 data-heavy images are shared every day, makes reading or even finding competently-encrypted messages an utterly futile effort.
If you want to spy on the innocent, or the lame-arsed, trivial, incompetent small fry, you may find some meagre success for the trillions of dollars you spend. But the real Black Hats' conversations will remain forever secure. π still won't be 3.000.