; and (6) eligible mothers residing in a qualified opportunity zone, as designated under section 1400Z–1 of the Internal Revenue Code of 1986. (e) Maintenance of effort Funds provided to an eligible entity under a grant awarded under subsection (a) shall supplement, and not supplant, funds from other sources for maternal mentorship or case management services. (f) (1) Evaluation The Secretary shall engage in ongoing research and evaluation activities in order to increase knowledge about the implementation and effectiveness of community maternal mentoring programs. The Secretary may carry out such activities directly, or through grants, cooperative agreements, or contracts, and shall submit a report to Congress not less than annually on the research and evaluation steps being taken to measure the impact and effectiveness of programs funded under this subchapter, as well as any interim outcomes that may be available. (2) Report requirement Not later than 3 years after the date of enactment of this section, the Secretary shall submit a report to Congress on the effectiveness of programs funded with grants under subsection (a) in producing the outcomes described in subsection (c)(3)(B), which shall include recommendations for improving program design and implementation. (g) Technical assistance The Secretary shall provide an eligible entity required to develop and implement an improvement plan under clause (c)(2)(B) with technical assistance to develop and implement the plan. The Secretary may provide the technical assistance directly or through grants, contracts, or cooperative agreements. (h) No funds to prohibited entities No prohibited entity shall be eligible to receive a grant under subsection (a), or any other funds made available by this section. (i) Protections for participating religious organizations A religious organization shall be eligible to apply for and receive funding for a program under this section on the same basis as a nonreligious organization, and a religious organization’s exemptions, in