Former Minneapolis police officer Mohamed Noor was convicted of third-degree murder and manslaughter for killing 911 caller Justine Ruszczyk Damond.
Police have no plans to press charges and say the girl's death appears to be a tragic accident.
At first a moderate conservative, Stevens emerged as a leader of the court's liberal wing, supporting abortion rights, gay rights and the environment.
A new indictment details gruesome killings that include machete mutilations and dumping bodies in the forest.
"This is the Trump administration’s most extreme run at an asylum ban yet," one attorney said.