Someone who can help and finding a way to get my son out of prison you should have been released next week but they decide to keep him even though he's a model prisoner

If a state representative a congressman or anybody in the state of Michigan who cares about someone who is being kept in prison. My son couldn't defend himself because of civil cases which we won the truth of the case never came out he has spent the last three years in prison without even getting a ticket. He came up for parole he was scheduled to get married in September he has four jobs lined up and he's anything but a threat to society so I think it's wrong for the parole board the charge people in Michigan thousands of dollars to keep people in prison who are not a threat to anyone. Thank you