You should probably start by reading the link I already provided. More information:
http://reason.com/blog/2014/01/12/befor ... as-williamIn 2002 - long before the revelations of Edward Snowden rocked the world - Binney and several former colleagues went to Congress and the Department of Defense, asking that the NSA be investigated. Not only was the super-secretive agency wasting taxpayer dollars on ineffective programs, they argued, it was broadly violating constitutional guarantees to privacy and due process.
The government didn't just turn a blind eye to the agency's activities; it later accused the whistleblowers of leaking state secrets. A federal investigation of Binney - including an FBI search and seizure of his home and office computers that destroyed his consulting business - exonerated him on all charges.
"We are a clear example that [going through] the proper channels doesn't work," says Binney, who approves of Edward Snowden's strategy of going straight to the media. At the same time, Binney criticizes Snowden's leaking of documents not directly related to the NSA's surveillance of American citizens and violation of constitutional rights. Binney believes that the NSA is vital to national security but has been become unmoored due to technological advances that vastly extend its capabilities and leadership that has no use for limits on government power. "They took that program designed [to prevent terrorist attacks] and used it to spy on American citizens and everyone else in the world," flatly declares Binney (33:30).