under section 3421 for administration, accounting, reporting, and program oversight functions, including for the purposes of developing systems to improve data collection and data sharing. 3423. Technical assistance The Secretary may, directly or through grants or contracts, provide technical assistance to nonprofit private entities and Native entities regarding the process of submitting to the Secretary applications for grants under section 3421, and may provide technical assistance with respect to the planning, development, and operation of any program or service carried out pursuant to such section. 3424. Planning and development grants (a) In general The Secretary may provide planning grants to public, nonprofit private, and Native entities for purposes of assisting such entities in expanding their capacity to provide substance use disorder treatment services in low-income communities and affected subpopulations that are underserviced with respect to such services. (b) Amount A grant under this section may be made in an amount not to exceed $150,000. 3425. Authorization of appropriations There is authorized to be appropriated to carry out this subtitle— (1) $500,000,000 for fiscal year 2019