; and (B) in precompressed, easily downloadable versions that are made available in all appropriate formats. 4. Restrictions on certain financial institutions (a) In general Not later than the date that is 90 days after submitting a report described under section 3(a)(1), the Secretary shall undertake the following with respect to a financial institution that is described under section 3(a)(1)(C) and listed in the report: (1) If the financial institution is a United States financial institution, require the closure of any account described in section 3(a)(1)(C)(i), and prohibit the provision of significant financial services, directly or indirectly, to a natural person covered by the report. (2) If the financial institution is a foreign financial institution, actively seek the closure of any account described in section 3(a)(1)(C)(i), and the cessation of significant financial services to a natural person covered by the report, using any existing authorities of the Secretary, as appropriate. (b) Suspension The Secretary may suspend the application of subsection (a) with respect to a financial institution upon reporting to the appropriate Members of Congress that the suspension is in the national interest of the United States, with a detailed explanation of the reasons therefor. 5. Exceptions for national security