[Labyrinthos]

States can pass laws. They need ‘permission’ from Congress to enter into any compact or agreement between the states.

The proposed amendment to the Ohio Constitution doesn't reference a compact or agreement between the states. Although other states have passed similar laws, lots of states pass similar laws on a variety of subject matter, but that doesn't mean that the states have entered into a compact or an agreement.

[Theoria]

Ohio has already introduced legislation last year to form such a compact. They are working in that direction.