Assault weapons legislation in the United States refers to bills and laws (active, theoretical, expired, proposed, or failed) that define and restrict or make illegal the manufacture, transfer, and possession of assault weapons. How these firearms are defined and regulated varies from jurisdiction to jurisdiction; generally, this constitutes a list of specific firearms and combinations of features on semiautomatic firearms. Assault rifles (not assault weapons) are defined by federal law in the National Firearms Act (NFA) of 1934. The NFA specifically defines an assault rifle as one that can fire more than one round per trigger pull, i.e., capable of selective fire. The Federal Assault Weapons Ban enacted in 1994 expired in 2004. This did little to regulate the actual firearms other than limit importation from specific countries. Attempts to renew this ban have failed, as have attempts to pass a new ban, such as the Assault Weapons Ban of 2013 (AWB 2013). Eight U.S. states have assault weapons bans: three were enacted before the 1994 federal ban, four more were passed before the federal ban expired, and one passed after the federal ban expired. The majority of states (42) have no assault weapons ban, although two, Minnesota and Virginia, have training and background check requirements for purchasers of assault weapons that are stricter than those for ordinary firearms. On June 4, 2021, a federal judge struck down the three-decade-long ban in California, though it is pending appeal by the California Attorney General. While there are no statewide assault weapon bans in Colorado and Illinois, local bans exist in certain cities or counties in each of these states. In 2018, most Americans who were polled supported a ban on assault weapons. In 2023, a plurality of Americans opposed a ban on assault weapons. The 1994 federal and 1989 state ban in California were prompted by the 1989 Cleveland Elementary School shooting in Stockton, California. Existing and proposed weapon legislation come under renewed interest in the wake of mass shootings, most recently after the May 2022 Robb Elementary School shooting in Uvalde, Texas. In addition to state bans, Washington, D.C., and some U.S. counties and municipalities have assault weapons laws. Federal assault weapons bans Expired assault weapons ban of 1994 In January 1989, 34 children and a teacher were shot in Stockton California. The gunman used a semi automatic AK-47 firearm; five children perished. President George H.W. Bush banned all imports