It looks like the Ohio legislature grew tired of the Republican governor's repeated attempts to undermine their pro-gun legislation.
Before Christmas, outgoing Republican Gov. John Kasich vetoed a gun bill that would have shifted the burden of proof provision in a self-defense shooting. Kasich, who calls himself a “Second Amendment guy,” voiced his frustration that the state legislature couldn’t come up with bipartisan solutions as the year closed. Well, that’s not the mood, John. It’s a state of war. And the legislature showed that when they returned after Christmas to override your veto (via NRA-ILA):
…the Ohio House of Representatives and Senate voted 67-22 and 21-11, respectively, to override Governor John Kasich’s veto of self-defense legislation, Sub. House Bill 228. Substitute House Bill 228 will now be enacted into law.
Placing the burden of disproving a self-defense claim on the prosecution, similar to how it is in every other state in the country
Critical expansion of preemption to ensure that localities do not create a patchwork of gun laws throughout Ohio.