Legislation at the federal, state, and local levels has attempted to address gun violence through a variety of methods, including restricting firearms purchases by youths and other "at-risk" populations, setting waiting periods for firearm purchases, establishing gun buyback programs, law enforcement and policing strategies, stiff sentencing of gun law violators, education programs for parents and children, and community-outreach programs. Despite widespread concern about the impacts of gun violence on public health, Congress has prohibited the Centers for Disease Control (CDC) from conducting research that advocates in favor of gun control. The CDC has interpreted this ban to extend to all research on gun violence prevention, and so has not funded any research on this subject since 1996. However the 'Dickey' amendment only restricts the CDC advocating for gun control with government funds. It does not restrict research into gun violence and the causal links between the gun and the violence, however funding has not yet been yet been granted for that purpose, i.e. epidemiology, the CDC requires congressional approval to proceed.
