here is an interesting link to a recent Johns Hopkins University q/a on guns
http://hub.jhu.edu/2016/10/12/guns-in-america-facts-figures/
Why is changing gun policy in the U.S. so difficult?
Webster boils it down to two issues: the structure of our government and the effectiveness of the gun lobby. He points to the Republican-controlled Senate and the need, practically speaking, for 60 or more votes to pass legislation.
"There's no motivation for senators in rural states to vote 'yes' on gun reform, as there is no political benefit and it would likely come back and haunt them next election period," Webster says. "In this political climate, it's very, very hard to do something nationally."
He adds that the National Rifle Association of America is incredibly effective, with a lot of help from media. When the Hopkins center conducts surveys on specific gun policies, such as expanded background checks and restrictions on individuals with a restraining order or multiple drunk driving offenses, 70 percent or more of gun owners and a similar percent of Republicans support changes.
"There's not much disagreement on who shouldn't have a gun in these cases," Webster says. "But the gun lobby changes the discussion and portrays any specific legislation as 'the government wants to change our way of life, take away our guns.' They make it a tribal thing. They are masterful at controlling the discussion and making it very difficult to come to a consensus. They fuel distrust of government."