WASHINGTON (AP) — The White House and the leaders of the congressional intelligence committees are rejecting former National Security Agency contractor Edward Snowden's plea for clemency.

"Mr. Snowden violated U.S. law," White House adviser Dan Pfeiffer said Sunday about the former systems-analyst-turned-fugitive who has temporary asylum in Russia.

"He should return to the U.S. and face justice," Pfeiffer said when pressed about whether clemency was being discussed.

Snowden made the plea in a letter given to a German politician and released Friday. In his one-page typed letter, he asks for clemency for charges over allegedly leaking classified information about the NSA to the news media. "''Speaking the truth is not a crime," Snowden wrote.

Snowden's revelations, among them allegations that the U.S. has eavesdropped on allies including German Chancellor Angela Merkel, have led to calls by allies to cease such spying and moves by Congress to overhaul U.S. surveillance laws and curb the agency's powers.

Bu the head of the Senate Intelligence Committee said if Snowden had been a true whistle-blower, he could have reported his concerns to her committee privately.

"That didn't happen, and now he's done this enormous disservice to our country," said Sen. Dianne Feinstein, D-Calif. "I think the answer is no clemency."

The chairman of the House Intelligence Committee, Rep. Mike Rogers, called clemency for Snowden a "terrible idea."

"He needs to come back and own up," said Rogers, R-Mich. "If he believes there's vulnerabilities in the systems he'd like to disclose, you don't do it by committing a crime that actually puts soldiers' lives at risk in places like Afghanistan."

Rogers contended that Snowden's revelations had caused three terrorist organizations to change how they communicate.

Both lawmakers addressed word that President Barack Obama did not realize Merkel's personal phone was being tapped.

Rogers implied that he didn't believe the president, or European leaders who claimed they were shocked by Snowden's allegations.

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"I think there's going to be some best actor awards coming out of the White House this year and best supporting actor awards coming out of the European Union," he said "Some notion that ... some people just didn't have an understanding about how we collect information to protect the United States to me is wrong."

Feinstein said she didn't know what the president knew, but said she intended to conduct a review of all intelligence programs to see if they were going too far.

"Where allies are close, tapping private phones of theirs ... has much more political liability than probably intelligence viability," she said.

Feinstein and Rogers been criticized for defending the NSA. Feinstein's committee produced a bill last week that she says increases congressional oversight and limits some NSA powers under the Foreign Intelligence Surveillance Act. Privacy advocates say the measure codifies the agency's rights to scoop up millions of American's telephone records.

Former NSA and CIA director Mike Hayden said it was possible Obama did not know about the alleged Merkel phone tapping.

But he said it was "impossible" that Obama's top staffers were unaware. "The fact that they didn't rush in to tell the president this was going on points out what I think is a fundamental fact: This wasn't exceptional. This is what we were expected to do."

Hayden's defense of the president comes days after he reportedly criticized the White House's handling of NSA revelations, when a former Democratic political operative tweeted snatches of Hayden's phone conversation, overheard on an Amtrak train.

Pfeiffer appeared on ABC's "This Week," while Rogers, Feinstein and Hayden were interviewed on CBS' "Face the Nation."

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