; and (B) the 3 tribal jurisdictions that have the highest gun-based homicide crime rates, as determined by the Attorney General. (d) Annual reports Not later than 1 year after the date of the enactment of this Act, and annually thereafter, the Attorney General shall submit to the Committee on the Judiciary of the Senate and the Committee on the Judiciary of the House of Representatives a report containing the following information: (1) The number of individuals indicted for such violations of Federal firearms laws during that year. (2) The increase or decrease in the number of individuals indicted for such violations of Federal firearms laws during that year under a program established under this section when compared with the year preceding that year. (3) To the extent the information is available, the average length of the sentences of imprisonment of the individuals convicted of violations of Federal firearms laws under such a program. (4) The number of multijurisdictional task forces established and the number of individuals arrested, indicted, convicted or acquitted of charges for violations of the crimes specified in subsection (b)(3). (e) Limitations on authorization of appropriations (1) In general For the salaries and expenses of assistant United States attorneys and Bureau of Alcohol, Tobacco, Firearms and Explosives agents participating in the program established under this section, there are authorized to be appropriated $15,000,000 for each of fiscal years 2021, 2022, and 2023. (2) Use of funds (A) Assistant United States attorneys The assistant United States attorneys hired using amounts made available under paragraph (1) of this subsection shall prosecute violations of Federal firearms laws specified in subsection (b)(3). (B) ATF agents The Bureau of Alcohol, Tobacco, Firearms and Explosives agents hired using amounts made available under paragraph (1) of this subsection shall, to the maximum extent practicable, concentrate their investigations on violations of Federal firearms laws specified in