Introductory to Guns and the Law

"Are there too many or not enough guns in the U.S.?"
I am interested in this topic because I want to elaborate my opinion on whether or not if there are too many guns in the U.S and not and whether or not the law enforces it well.

"Gun laws in the United States vary from state to state and are independent of, though sometimes broader or more limited in scope than, existing federal firearms laws. Some U.S. states have also created so-called assault weapon bans that are independent of, though often similar to, the expired federal assault weapons ban. The state level bans vary significantly in their form, content, and level of restriction. Forty-four states have a provision in their state constitutions similar to the Second Amendment of the Bill of Rights. The exceptions are California, Iowa, Maryland, Minnesota, New Jersey, and New York; however, the statutory civil rights laws of New York contain a provision virtually identical to the Second Amendment.[1][2] As well, the Supreme Court of the United States has held that the Second Amendment applies to all state governments and their political subdivisions.[3]
Firearm license-holders are subject to the firearm laws of the state they are in, not the state in which the permit was issued. Reciprocity between states exists for certain licenses, such as concealed carry permits. These are recognized on a state-by-state basis. For example, Arizona recognizes a Nevada permit, but Nevada does not recognize an Arizona permit. Florida issues a license to carry both concealed weapons and firearms, but others license only the concealed carry of firearms. Some states do not recognize out of state permits to carry a firearm at all, so it is important to understand the laws of each state when traveling with a handgun.[4]
When planning a trip it can be very confusing to match the concealed carry weapon permit to the state laws. John Thune of South Dakota introduced a national reciprocity bill, but it has never been able to advance out of Senate committees. Checking with each state's legal page is important. There are travel tools that may help shorten the search time.[5]
In many cases, state firearms laws can be considerably less restrictive than federal firearms laws. This does not confer any de jure immunity against prosecution for violations of the federal laws. However, state and local police departments are not legally obligated to enforce federal law."
- Source: http://en.wikipedia.org/wiki/Gun_laws_in_the_United_States_(by_state)