The Commission, upon a petition for waiver filed within 6 months after August 10, 1993, may waive the application of section
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(b) of this title to any foreign ownership that lawfully existed before May 24, 1993, of any provider of a private land mobile service that will be treated as a common carrier as a result of the enactment of the Omnibus Budget Reconciliation Act of 1993, but only upon the following conditions: