Answer to this question is beyond the scope of this site. We suggest that you do an inter-net search. The laws and regulations will undoubtedly run for many pages.
In the entire U.S. there are an estimated 20,000 or more gun laws.
there are heaps
No matter WHERE you use a gun, there are laws that govern what you can and cannot do. If you do not know those laws, please do not own a gun.
Your question is an incorrect statement. Why do you think states must not enforce gun laws? They do.
That is too broad of a question to answer as asked. Is there some specific information you want about gun laws?
Mainly coal.
Literally, tens if not hundreds of thousands of laws. My copy of US state gun laws is about 2 inches thick. It is estimated that there are more than 20,000 gun laws in the US- and you are asking about "around the world".
Like most states, there are far too many gun laws for a brief answer here on Answers.com. However, this is a link to a review of several of their gun laws. https://en.wikipedia.org/wiki/Gun_laws_in_Louisiana
barak obama is pushing for more vigurous gun control laws and background checks
NRA members vote against gun control laws.
The cast of Australias Most Wanted - 1999 includes: Robert Rabiah as Suspect
What country?