; (6) conduct punishable under sections 1581 through 1594 of title 18 of the United States Code; (7) sections 1951, 1952, 1956, and 1957 of title 18 of the United States Code; (8) sections 2312 through 2315 of title 18 of the United States Code; or (9) any attempt to engage in an offense described in paragraphs (1) through (8) above, or conduct punishable under sections 2 through 4, and sections 371 through 373 of title 18 of the United States Code in furtherance of such an offense. (c) Admission of essential elements of an offense A person shall be deemed to have admitted the essential elements of an offense within the meaning of subsection (a)(3) upon an oral or written statement to such effect, or upon a conviction or formal finding by a competent Federal, State or local court, tribunal or military proceeding that said person has engaged in unlawful conduct whose essential elements include those that would be required for conviction of a disqualifying offense as described in subsection (b). 5. Denaturalization of criminal gang members and supporters Section 340 of the Immigration and Nationality Act ( 8 U.S.C. 1451 ) is amended by striking subsection (c) and inserting the following language: (c) Membership in certain organizations