The all-knowing wiki says thus:
In January 2017, a Justice Department source said that Manning was on President Obama's short list for a possible commutation.[204] On January 17, 2017, President Obama commuted all but four months of Manning's remaining sentence.[18][205] In a press conference held on January 18, Obama stated that Manning's original 35-year prison sentence was "very disproportionate relative to what other leakers have received" and that "it makes sense to commute—and not pardon—her sentence."[205][206] Notwithstanding her commutation, Manning's military appeal will continue, with her attorney saying, "We fight in her appeal to clear her name."[207]
On January 26, 2017, in her first column for The Guardian since the commutation, Manning lamented that President Obama's political opponents consistently refused to compromise, resulting in "very few permanent accomplishments" during his time in office. As The Guardian summarized it, she saw Obama's legacy as "a warning against not being bold enough."[208] In response, President Donald Trump tweeted that Manning was an "ungrateful traitor" and should "never have been released."[209]
https://en.wikipedia.org/wiki/Chelsea_Manning