What's needed is MNPD sharing their data around the criminal illegal aliens with ICE so that they can execute the deportation orders that have already been issued by judges.
The structure of your message implies you are not American. DHS posts the people they deport here:
It's really hard to go down that list and say "yeah i'd rather have these people here than have ICE deporting people".
That would not be a problem if they deported these people, instead of what they are doing.
MPD _is_ sharing and coordinating with ICE _when they're supposed to be_. MPD has already transferred ~70 people to ICE for deportation this year alone, after they completed prison sentences (which ICE claimed as their own arrests).