Generally speaking wildlife management and conservation is taken much more seriously in the states than many other countries. They have very strict hunting and fishing laws, strict and tight seasons, bag quotas on virtually all quarry and for many in demand species, like elk, a tag system. Anyone can put in for a tag either state residents or out of state, you build up points depending on how many times you apply. Some folks wait years to get a tag, so it is a big deal. Obviously a small number of tags get sold, at very high prices, and the money raised goes back into conservation.
All hunters need a hunting licence and a fishing licence if you fish, again all money raised goes back into conservation. I think they have got the balance right, probably why they don't have the clammer to ban this and ban the other, because most people understand how the system works and how it benefits wild life as a whole.