The Department of Justice previously opposed Johnson’s pushes for early release, citing the size and impact of the trafficking ring.
Her clemency came as a surprise to some, after Mr. Trump recently said some drug dealers should get the death penalty.
On Thursday morning, President Trump tweeted, “Good luck to Alice Johnson. Have a wonderful life!”
“I turned my life all the way around in prison and decided that I am not going to just do time or let time do me. I’m going to make the most of this opportunity and I’m going to be of service to others because that’s really what life is about,” Johnson said.