Cross-national comparisons, particularly with countries like Australia, Japan, and the UK that tightened gun laws after mass shootings, are frequently cited to show a correlation between stricter regulation and lower firearm death rates. Critics of this comparison note that cultural and historical differences make direct comparisons complicated, but supporters argue the pattern still holds broadly. Supporters argue that even a modest reduction in mass-casualty incidents justifies the policy on its own. Advocates argue this cross-national pattern, while not conclusive on its own, is a meaningful data point worth weighing.