; and (II) invoke the aid of any appropriate court of the United States. (ii) Timeline for production of information To prevent undue delay of the placement of an immigrant child, requirements set forth in a subpoena under clause (i)(I) shall be satisfactorily fulfilled not later than 7 days after the date on which the Ombudsperson issues the subpoena. (H) Reporting mechanisms (i) In general The Ombudsperson shall establish and maintain— (I) a toll-free telephone number to receive complaints and reports of matters for investigation; and (II) an email address to receive complaints, such reports, and requests for review of placement decisions. (ii) Availability The Ombudsperson shall ensure that— (I) such telephone number is made available, and a telephone is accessible, to each immigrant child in a facility; and (II) such email address is made available to sponsors, Flores settlement agreement class counsel, and legal services providers and child advocates who serve such immigrant children. (I) Report to Congress (i) In general Not later than September 30 each year, the Ombudsperson shall submit to Congress a report on the accomplishments and challenges of the Office of the Ombudsperson during the fiscal year ending on that date. (ii) Elements Each report required by clause (i) shall include the following: (I) For the preceding fiscal year— (aa) a description of the accomplishments and challenges relating to implementation and compliance with this Act; and (bb) a summary of— (AA) each site visit conducted; (BB) any interview with an immigrant child or facility staff; (CC) facility audits and corrective actions taken or recommended; (DD) appeals made to the Ombudsperson; and (EE) any other information the Ombudsperson considers relevant. (II) A summary of complaints made and investigations carried out during the preceding fiscal year, including— (aa) the number of complaints and number and nature of other contacts; (bb) the number of complaints made, including the type and source