Certainly not enough given the level of Snowden's sacrifice. The article mentions revelations of Verizon participating in illegal spying. It was also revealed

Certainly not enough given the level of Snowden's sacrifice. The article mentions revelations of Verizon participating in illegal spying. It was also revealed ATT and others participated. This prompted congress to pass a retroactive law making the illegal telecom spying, during the Bush Jr. administration, legal. I guess the US hypocrisy is more plain now? The US is a nation of (retroactive) laws that protect powerful men. There were a few technical fixes. The NSA presentation slide that stated, OpenVPN and SSL were "not a problem" led to using stronger ciphers by default. Google reportedly encrypts its inter-DC links since the revelations that the US was tapping and spying on the communications. You are less likely to be treated as a tinfoil hat nutter if you talk about US spying on its own citizens and the rest of the world. The rest of the world's population stated the US as the greatest threat to freedom in the world today in polls across allied nations, so some who had prior, are no longer believing US propaganda. Although recent US illegal wars of aggression and revelations of torture and other war crimes, probably played a large part here too. The powerful have tried harder to ensure secrecy, and control over documentation of their misdeeds. It is highly likely that the powerful also are more careful now to ensure there is no record of their crimes. But, what should have happened was the displacing of all the federal prisoners convicted of non-violent drug offences to make room for all surviving politicians and surviving members of the NSA, CIA, FBI, federal courts, etc., who reasonably could be expected to have known of illegal behavior of those agencies, and who did not do everything within their abilities (including whistle blowing) to end it. There would have been a lot of powerful members of the corporate party's far-right wing (Republicans) and the corporate party's right wing (Democrats) being locked up, so of course, go after the messenger, sweep what you can under the rug, and as a last resort, pass retroactive laws to make the illegal, legal.