Context: Hunting is primarily regulated by state law; additional regulations are imposed through United States environmental law in the case of migratory birds and endangered species. Regulations vary widely from state to state and govern the areas, time periods, techniques and methods by which specific game animals may be hunted. Some states 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 states, for which completion of a hunting safety course is sometimes a prerequisite.

Question: What law primarily regulates hunting?
Answer: state

Question: What additional type of law applies in the case of migratory birds and endangered species?
Answer: environmental

Question: What varies widely from state to state?
Answer: Regulations

Question: What do some states make a distinction between?
Answer: protected species and unprotected species

Question: What do hunters of protected species require in all states?
Answer: a hunting license

Question: How is hunting regulated?
Answer: by state law

Question: Migratory birds and endangered species are protected by what law?
Answer: United States environmental law

Question: What hunters require a hunting license in all states?
Answer: Hunters of protected species

Question: What is sometimes a prerequisite of obtaining a hunting license?
Answer: hunting safety course

Question: What law regulates the elimination of vermin?
Answer: Unanswerable

Question: In the case of vermin, what additional type of law applies?
Answer: Unanswerable

Question: What do hunters of vermin need to have in all states?
Answer: Unanswerable

Question: What do you need to complete before you can hunt vermin?
Answer: Unanswerable

Question: What do state regulations govern regarding hunting vermin?
Answer: Unanswerable