A 63-year-old grandmother jailed in 1996 on a non-violent drug charge has been released from prison after she was granted clemency by President Trump.
Alice Johnson ran towards an emotional reunion with her family after leaving the prison in Pickens County, Alabama.
Her case was highlighted when Kim Kardashian West, who has lobbied for her release, met Mr Trump last week.
The White House said Johnson had been a model prisoner and worked hard to rehabilitate herself.
She was jailed alongside 15 others for taking part in a cocaine distribution ring, and convicted on charges of attempted possession of drugs and money-laundering in Tennessee.
Long battle finally over
Analysis by Jessica Lussenhop, BBC News, Washington
After four years and two presidential administrations, Alice Marie Johnson is finally going home.
I first began communicating with Ms Johnson as she waited to hear whether or not she’d been approved under President Barack Obama’s Clemency Initiative in 2014. She easily met all of the criteria, she had a spotless disciplinary record and even her own warden felt that she deserved to go home.
But days before he left office, Mr Obama denied her as well as hundreds of others. She swore to me she would never put her family through this process again – the disappointment was too painful for her two daughters.
Renewed hope came in the unlikely form of a reality TV superstar – Kim Kardashian West, whom Johnson began referring to as her “war angel”. Today, the long battle is finally over, though it is more a testament to the arbitrariness of the clemency process than anything else.
According to Ms Johnson’s lawyer Brittany K Barnett, it was Kardashian West herself who called to deliver the news to Ms Johnson.
“Overwhelmed with emotion, Alice said it feels like she has been ‘resurrected from the dead and she has her life back’.”
What did the White House say?
“Ms Johnson has accepted responsibility for her past behaviour and has been a model prisoner over the past two decades,” the White House said in a statement.
“Despite receiving a life sentence, Alice worked hard to rehabilitate herself in prison, and act as a mentor to her fellow inmates.”
The statement added that the administration believed in being tough on crime but believed in giving a second chance to those who tried to better themselves in prison.
So grateful to @realDonaldTrump, Jared Kushner & to everyone who has showed compassion & contributed countless hours to this important moment for Ms. Alice Marie Johnson. Her commutation is inspirational & gives hope to so many others who are also deserving of a second chance.
— Kim Kardashian West (@KimKardashian) June 6, 2018
How did Kim Kardashian get involved?
Kardashian West joined what has been a long-running campaign for Johnson’s freedom, spearheaded by the clemency foundation CAN-DO, friends and family.
She was first alerted to the issue after spotting a video about the case on social media.
Kardashian West visited the White House with her lawyer, Shawn Holley, and had also linked up with Mr Trump’s son-in-law and presidential adviser, Jared Kushner, who has been lobbying for prison reform.
In a tweet shortly after the White House announcement, Kardashian West described Alice Johnson’s clemency as inspirational.
A showman’s flair for the dramatic
The presidential pardon power has few restrictions and scant oversight. The checks on it, such as they are, rely on norms and administrative practice without the binding force of law or constitutional strictures.
Donald Trump appears to be realising that the pardon has been a tool underutilised by his predecessors, which has the potential to grab headlines and demonstrate presidential decisiveness. With a showman’s flair for the dramatic, he has turned the pardon process into a media spectacle, entertaining suggestions from celebrities and politicians, and publicly musing about who might receive a presidential benediction next.
Setting aside talk of self-pardons and the implications the more generous use of the power might have for the Russia probe, Mr Trump has – at the very least – once again rewritten how presidents ought to conduct themselves.
This president clearly believes that just because something hasn’t been done that way in the past, it doesn’t mean he can’t do it that way now.