Hunting is primarily regulated by <answer>state</answer> law; additional regulations are imposed through United States environmental law in the case of migratory birds and endangered species. Regulations vary widely from <answer>state</answer> to <answer>state</answer> and govern the areas, time periods, techniques and methods by which specific game animals may be hunted. Some <answer>state</answer>s make a distinction between protected species and unprotected species (often vermin or varmints for which there are no hunting regulations). Hunters of protected species require a hunting license in all <answer>state</answer>s, for which completion of a hunting safety course is sometimes a prerequisite.
What law primarily regulates hunting?
state