Totally lock down the southern border, deport all Illegal Mexicans and some other Central Americans.
Cities vastly expand hiring of police and stop and frisk in risk prone urban areas.
Now the rate is even lower, 2.9 as opposed to 7.0 in 1993.
U.S. Firearm Deaths
In 2010, there were 3.6 gun homicides per 100,000 people, compared with 7.0 in 1993, according to CDC data.
In 2010, CDC data counted 11,078 gun homicide deaths, compared with 18,253 in 1993.5
Men and boys make up the vast majority (84% in 2010) of gun homicide victims. The firearm homicide rate also is more than five times as high for males of all ages (6.2 deaths per 100,000 people) as it is for females (1.1 deaths per 100,000 people).
By age group, 69% of gun homicide victims in 2010 were ages 18 to 40, an age range that was 31% of the population that year. Gun homicide rates also are highest for adults ages 18 to 24 and 25 to 40.
A disproportionate share of gun homicide victims are black (55% in 2010, compared with the 13% black share of the population). Whites were 25% of victims but 65% of the population in 2010. Hispanics were 17% of victims and 16% of the population in 2010.
The firearm suicide rate (6.3 per 100,000 people) is higher than the firearm homicide rate and has come down less sharply. The number of gun suicide deaths (19,392 in 2010) outnumbered gun homicides, as has been true since at least 1981.
http://www.pewsocialtrends.org/2013/05/0...c-unaware/
However you can reduce out of wedlock births to poor people, that would help also.
No idea how to prevent gun suicide.