Venison, anyone?

In Twinsburg, Ohio, you’re now allowed to take your bow out into your back yard and hunt deer … if your lot’s at least four acres in size, if you get a license from the city, if you take an archery proficiency test, and if you pay a $25 fee. Administrative hassles aside, I’m glad that Twinsburg residents can thin the booming deer population around here. I have just one question.
How is it that until now, Twinsburg could prevent you from bowhunting on your own property?