; (2) the number of children who were injured and the number of children who were killed by firearms in that State; (3) the number of adults who were prosecuted under the law described in subsection (a), and the number of such adults who were convicted; and (4) such additional information as the Attorney General may reasonably require. (e) Maintenance of effort Any Federal funds received by a State under this section shall be used to supplement, not supplant, non-Federal funds that would otherwise be available for the purposes described in subsection (a). (f) Authorization of appropriations There is authorized to be appropriated such sums as may be necessary to carry out this section. 3. Centers for Disease Control and Prevention (a) In general Not later than one year after the date of the enactment of this Act, the Secretary of Health and Human Services, through the Director of the Centers for Disease Control and Prevention, shall conduct a study, and submit to Congress a report, on child injuries and deaths resulting from firearms and on practices for the safe storage of firearms. (b) Authorization of appropriations For purposes of carrying out subsection (a), there is authorized to be appropriated $10,000,000. 4. Requirements applicable to firearms dealers Section 923 of title 18, United States Code, is amended by adding at the end the following: (m) Each licensed dealer shall provide to each person to whom the licensee sells a firearm a document that contains gun safety information, including safe storage practices, as the Attorney General shall prescribe, which shall be set forth in easy-to-understand language. .