there are only very few in Colombia
yes they made the laws
In the entire U.S. there are an estimated 20,000 or more gun laws.
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?
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".
by what the government says
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.
Gun possession in Colombia is restrictive. The country’s Constitution of 1991 allows civilians the right to possess and carry a gun after obtaining a license, but in recent years presidents have issued decrees severely restricting carry permits. The Constitution also bans civilian-owned guns at political meetings and elections.