; or (2) is or has ever been a member, associate or affiliate of, or who has ever provided material support to, a criminal street gang as defined in section 520 of title 18 of the United States Code, shall be permitted to file an application or petition, or submit an affidavit of support, on behalf of an alien under any provision of the immigration laws, nor shall such person be permitted to assume custodial care for an unaccompanied alien minor. 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