For the purposes of this Act, a local development district shall be an entity certified to the Commission either by the Governor of the State or States in which such entity is located, or by the State officer designated by the appropriate State law to make such certification, as having a charter or authority that includes the economic development of counties or parts of counties or other political subdivisions within the region. No entity shall be certified as a local development district for the purposes of this Act unless it is one of the following:
(1) a
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nonprofit incorporated body organized or chartered under the law of the State in which it is located;
(3) a
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nonprofit agency or instrumentality created through an interstate compact; or
(4) a
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nonprofit association or combination of such bodies, agencies, and instrumentalities.