I think that the only way agencies were able to keep postponing the end of the Patriot act and related laws ( https://en.wikipedia.org/wiki/Patriot_Act ) is presenting massive evidence to the congress of the tragedies they were able to avoid with the power granted by those laws.
Somebody that was publicly martyred by a country of great power makes more noise than a war that was avoided.
Weakening strong cryptography is not the solution but I think we sometimes grossly underestimate the other face of the coin.