"Hopefully, this full pardon will help rectify a very sad portion of his life", according to a statement issued by White House spokeswoman Sarah Huckabee Sanders announcing the pardon. Asked if a pardon was about Comey, Conway said no.
The move to pardon Libby - who became embroiled in a special counsel investigation involving then-Deputy Attorney General James Comey - comes at a resonant moment.
House of Representatives Democratic leader Nancy Pelosi said in an declaration, "This pardon sends a troubling sign to the president's allies that justice will be rewarded".
The pardon was the third for Trump.
Rep. Adam Schiff (D-California) tweeted out his concerns on social media.
Plame similarly told MSNBC on Friday that Trump's actions show "you can commit crimes against national security and you will be pardoned". The plans were first reported by ABC News. Mr. Libby, prosecutors said, lied about where he learned of her identity and what he discussed with reporters.
A spokesman for Bush said Friday that the former president was "very pleased" for Libby and his family.
Libby is Cheney's former chief of staff. Rep. Liz Cheney, a Wyoming Republican and daughter of the former vice-president, said Libby was the victim of a "miscarriage of justice", and she thanked Trump for "righting a awful wrong".
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Former Deputy Secretary of State Richard Armitage admitted that he was the source of the leak, but only Scooter Libby was found guilty of lying to the Federal Bureau of Investigation and obstructing justice. His voting rights were restored in 2013 by Virginia Governor Bob McDonnell. No one was ever charged for the leak. Her husband Joseph Wilson, a former livelihood USA diplomat, had criticized the Iraq war.
Wilson's claim, undercutting the justification for waging war against Iraq, was based on material he gathered in Niger for the Central Intelligence Agency. Democrats didn't want the Plame investigation to ensnare the Bush administration's in-house critics. That was taken as proof that Libby must of have raised Plame's work at the Central Intelligence Agency.
If Ms. Miller had testified accurately, she would have dealt a severe blow to Mr. Fitzgerald's central contention that Mr. Libby was lying when he said he was surprised to hear Russert mention Ms. Plame. But Armitage readily admitted his involvement to prosecutors and a grand jury. He maintained that the differences between his testimony and others was just a matter of a different recollection of events. In fact, Trump should issue even more of them. And the judge in sentencing him called the evidence "overwhelming".
All of this stems from a note Miller wrote about a conversation with Scooter Libby.
The thing is, Mr. Trump is unlikely to be able to use his pardon power to get out of his legal jam.
Liz Cheney said Friday Lewis "Scooter" Libby is a "good, honorable and innocent man" who fell victim to prosecutorial misconduct.
Further ponderings have been considered due to comments from Kellyanne Conway, who serves as Trump's White House counsel. He granted one previous year for former Arizona sheriff Joe Arpaio, who was awaiting sentencing for contempt of court. Some argued that, as Hamilton put it, the supposition of the connivance of the Chief Magistrate ought not to be entirely excluded. In the end, though, they made a decision to give, even for treason, the pardon power to the president alone. President George W. Bush commuted Mr. Libby's sentence shortly after his conviction. The disgraced staffer still served two years probation and was hit with a $250,000 fine.