; and (vi) perform background checks for private sellers for a reasonable fee; (B) the State established standards for how to properly respond to straw purchasers and firearms traffickers; and (C) the State established standards for storing ammunition in a locked container separate from any firearms. (e) Annual report Each State receiving a grant under this section shall submit to the Assistant Attorney General, for each fiscal year during which the State expends amounts received under the grant, a report, at such time and in such manner as the Assistant Attorney General may reasonably require, that contains— (1) a summary of the activities carried out using amounts made available under the grant; (2) an assessment of whether the activities are achieving the elements described in subsection (c)(2); and (3) such other information as the Assistant Attorney General may require. (f) Limitations on the allocation of funds Of the amount made available to carry out this section in any fiscal year— (1) not more than 2 percent may be used by the Assistant Attorney General for salaries and administrative expenses; and (2) not more than 25 percent may be used for technical assistance, training, and evaluation. (g) GAO report Not later than 2 years after the date of enactment of this part, the Comptroller General of the United States shall submit to Congress a report evaluating whether States have been able to effectively adopt firearm licensing requirements. (h) Reallocation of appropriations A recipient of a grant under subsection (a) shall return to the Assistant Attorney General any amounts received under a grant under subsection (a) that are not expended for a purpose described in this section. . (b) Authorization of appropriations Section 1001(a) of title I of the Omnibus Crime Control and Safe Streets Act of 1968 ( 34 U.S.C. 10261(a) ) is amended by adding at the end the following: (28) There are authorized to be appropriated to carry out part NN $20,000,000 for each of fiscal years 2019 through 2023. .