They changed the laws for hunting Sundays a few years back in Ohio, and I love it.
I don't know the origins of Sunday hunting laws. In rural Ohio, where I grew up in the 60's and 70's, it sounded like a war zone during small game hunting seasons. Stores and businesses, and everything was closed, and traffic was scarce on Sundays, so it was known for peace and quiet. I suspect that the Sunday laws originated to preserve peace and quiet on Sundays more than for any religious objection to it. Today I no longer hear all those random shotgun blasts on opening day of rabbit season.