Issues concerning firearms are very different in the UK and America; American citizens keep guns in the home for self-defence purposes. While firearms are kept under tight restriction and control of the police in England and Wales, the United States (US) continues to allow greater freedom to law-abiding citizens to carry weapons and keep guns in the home. Greater gun availability results in a greater risk of their use in suicides. While guns also play a significant role in crime in the US, the overall level of gun crime in England and Wales is very low, 0.3% of all crime recorded by the police. One way in which authorities in both Britain and America have attempted to control gun availability has been to address licensing laws. Most perpetrators of spree shootings kill themselves at the scene of the crime; therefore evidence can only be gathered afterwards from eyewitnesses.