I fail to understand why a country ,any country has different laws in different states .Surely it makes more sense for a nation to have uniform laws all over the country ?
I believe their are currently 630,000 machine guns registered with the Bureau of Alcohol,Tobacco,Firearms,and Explosives,including law enforcement weapons in the country.
In the past 18 months there have been more than 500 mass shootings in the USA in which 4 or more people have been injured or killed.
And unless the pro and anti gun lobbies find a way to negotiate sensible reforms there will be many more deaths and injuries.
The USA has a population roughly of 325 million people with over 300 million firearms strewn among the population .
The future does not look good to me unless the American Government gets serious and acts on Gun Control .