You answered that question in your previous post and in this post: politics. Besides, you guys are too busy responding to calls all over the city to be serving warrants; especially since you're understaffed, right?
No, he didn't. The answer is to either properly staff and fund the agency responsible for serving criminal warrants or admit that the merger was a complete lie as well as a waste of millions of tax dollars. Allow the Sheriff to have his old jurisdiction back and get some value out of the millions spent by the Sheriff since the merger to re-duplicate services.
Refusal to do either is advocating or more tax dollars stripped from the ever shrinking number of citizens in Marion County willing to work for a living.