It was one of the strangest personal crusades on Capitol Hill: For years, Sen. Ron Wyden said he was worried that intelligence agencies were violating Americans' privacy.
But he couldn't say how. That was a secret.
Wyden's outrage, he said, stemmed from top-secret information he had learned as a member of the Senate Intelligence Committee. But Wyden (D-Ore.) was bound by secrecy rules, unable to reveal what he knew. …
The revelations from former National Security Agency contractor Edward Snowden — detailing vast domestic surveillance programs that vacuumed up data on phone calls, e-mails and other electronic communications — have filled in the details of Wyden's concerns.