Yes.
First, at the core of those decisions that are undertaken independently, specifically for those who are seeking parole where it's discretionary, community safety and reintegration obviously are the two fundamental principles that are assessed. Again, that is not by elected members of the government, but rather by delegated authorities, who exercise that discretion independently and in a non-partisan way.
There are other rules that govern statutory release for those who are serving federal sentences of two years plus a day or more. There are statutory rules around how much of that sentence they must serve in a federal incarceration facility and then around transitioning them stage by stage back into the community.