This type of wholesale spying on law abiding citizens goes back 15+ years. I blame Obama, Bush, Congress, et al for not showing a backbone and ending these programs.
Edit: I'm in an exceedingly grumpy mood today. :-/
15? It's arguable that the government's institutional abuse of power to spy on law-abiding citizens began in earnest with J. Edgar Hoover, who began his tenure as the head of the FBI in 1924.
I want to revisit the earlier point in your context. You say that it goes back 15 years. You are right.
Each of these parties is jointly and severally liable for it. Obama is currently liable. I think it's just and right to criticize him for failure to act. His lack of fortitude is not excused by the lack of fortitude of others.
Edit: I'm in an exceedingly grumpy mood today. :-/