The city wants to join the county in the ability to have the state transfer tax refunds to the city from people who allegedly owe money to the city. I say allegedly because such process denies the person in question due process. It's a legal way of the city to zip in between the citizen and the bank teller and taking the money off the counter.
This manner of bullying money from citizens should be challenged in court, where the validity of the debt should have been argued before a judge in the first place. Tell your alderman to vote against tax refund intercepts! While you are at it, tell your county supervisor that you don't like the county doing it either. Let the citizens have their day in court!