Rescission of exemption for imports of petroleum crude and ATF now effective immediately, subject to prior actions saved. Rescission removes the exemption that had excluded imports of petroleum crude and ATF from the additional customs duty equivalent to the Special Additional Excise Duty under the Finance Act; the Central Government invokes customs and general clauses statutory powers, declares the rescission necessary in the public interest, makes it effective immediately, and preserves actions or omissions done before rescission.