Seven months ago, the world began to learn the vast scope of the National Security Agency’s reach into the lives of hundreds of millions of people in the United States and around the globe, as it collects information about their phone calls, their email messages, their friends and contacts, how they spend their days and where they spend their nights. The public learned in great detail how the agency has exceeded its mandate and abused its authority, prompting outrage at kitchen tables and at the desks of Congress, which may finally begin to limit these practices.

The revelations have already prompted two federal judges to accuse the N.S.A. of violating the Constitution (although a third, unfortunately, found the dragnet surveillance to be legal). A panel appointed by President Obama issued a powerful indictment of the agency’s invasions of privacy and called for a major overhaul of its operations.

All of this is entirely because of information provided to journalists by Edward Snowden, the former N.S.A. contractor who stole a trove of highly classified documents after he became disillusioned with the agency’s voraciousness. Mr. Snowden is now living in Russia, on the run from American charges of espionage and theft, and he faces the prospect of spending the rest of his life looking over his shoulder.

Considering the enormous value of the information he has revealed, and the abuses he has exposed, Mr. Snowden deserves better than a life of permanent exile, fear and flight. He may have committed a crime to do so, but he has done his country a great service. It is time for the United States to offer Mr. Snowden a plea bargain or some form of clemency that would allow him to return home, face at least substantially reduced punishment in light of his role as a whistle-blower, and have the hope of a life advocating for greater privacy and far stronger oversight of the runaway intelligence community.