What is the fine-grained topic of the following text: He said the government’s work will include looking at “any measure which will be effective.” He also cited measures already included in Bill C-71, which proposes to tighten certain regulations on gun ownership laws, including expanded background checks on potential gun owners, stronger record-keeping by retailers and requiring buyers to first present a firearms license. Only return the topic.
Government's proposed measures to tighten gun ownership laws