<P> Response to these events has resulted in federal legislation to regulate the public possession of firearms . For example, the attempted assassination of Franklin Roosevelt contributed to passage of the National Firearms Act of 1934, and the Kennedy assassination (along with others) resulted in the Gun Control Act of 1968 . The GCA is a federal law signed by President Lyndon Johnson that broadly regulates the firearms industry and firearms owners . It primarily focuses on regulating interstate commerce in firearms by largely prohibiting interstate firearms transfers except among licensed manufacturers, dealers, and importers . </P> <P> A quarter of robberies of commercial premises in the U.S. are committed with guns . Fatalities are three times as likely in robberies committed with guns than where other, or no, weapons are used, with similar patterns in cases of family violence . Criminologist Philip J. Cook hypothesized that if guns were less available, criminals might commit the same crime, but with less - lethal weapons . He finds that the level of gun ownership in the 50 largest U.S. cities correlates with the rate of robberies committed with guns, but not with overall robbery rates . He also finds that robberies in which the assailant uses a gun are more likely to result in the death of the victim, but less likely to result in injury to the victim . A significant number of homicides are the consequence of an unintended escalation of another crime in which firearms are present, with no initial intent to kill . Overall robbery and assault rates in the U.S. are comparable to those in other developed countries, such as Australia and Finland, with much lower levels of gun ownership . A strong association exists between the availability of illegal guns and violent crime rates, but not between legal gun availability and violent crime rates . </P> <Dl> <Dd> See also Assault with a deadly weapon </Dd> </Dl> <Dd> See also Assault with a deadly weapon </Dd>

How many murders are there in the us every year