Except as provided in subsection (c) of this section, any person, including an individual, trust, estate, partnership, association, company, or corporation, which is a resident of or which is organized under the laws of the Commonwealth of the Northern Mariana Islands and which is subject to the provisions of section 601 of the Covenant to Establish the Commonwealth of the Northern Mariana Islands (Public Law 94–241), shall be exempt from the requirements of such section with respect to income from sources within the Northern Mariana Islands for its taxable year beginning after December 31, 1980, and before January 1, 1982: Provided, That the Secretary receives written notice from the Governor of the Northern Mariana Islands not later than September 30, 1980, that sections
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5 of chapter 2 of Public Law 1–30 of the Commonwealth of the Northern Mariana Islands or its successor, have been repealed in their entirety, effective December 31, 1981.