Because criminals do not obey laws. There are already laws against killing, injuring or robbing people that are ignored by criminals. Pass another law, they will ignore that as well.
Let your lawmakers know how you feel. Find a lawmaker you agree with that is running for office, and help them get elected. Help educate other people about gun laws.
Implementing stricter gun control laws can help reduce gun violence in the United States by making it more difficult for individuals who may pose a threat to obtain firearms. These laws can also help prevent illegal gun trafficking and limit access to firearms for those with a history of violence or mental health issues. Overall, stricter gun control measures aim to enhance public safety and reduce the likelihood of gun-related incidents.
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?
Best answer is "MAYBE." There are many "gun free zones" in which law-abiding citizens won't carry a firearm, but a criminal would. In fact, criminals can take advantage of "gun free zones" because they know that their potential victims are likely to be unarmed. Now, if the government can ensure that guns are kept out of the hands of criminals, then stricter gun laws SHOULD help prevent gun-related fatalities. That's the tough part, criminals, by definition, don't obey 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".
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.
Far to many to give a brief answer here. Please be specific, and we will try to help, but your question is too general.