; or (vi) the alien is convicted of an aggravated felony. ; and (E) by striking the undesignated matter at the end. (3) Sustaining burden of proof; credibility determinations Section 241(b)(3)(C) of such Act ( 8 U.S.C. 1231(b)(3)(C) ) is amended by striking In determining whether an alien has demonstrated that the alien’s life or freedom would be threatened for a reason described in subparagraph (A), and inserting For purposes of this paragraph, . (4) Effective date; application The amendments made by paragraphs (1) and (2) shall take effect as if enacted on May 11, 2005, and shall apply to applications for withholding of removal made on or after such date. (d) Effective dates; applications Except as provided in subsection (c)(4), the amendments made by this section shall take effect on the date of the enactment of this Act and sections 208(b)(2)(A), 240A(c), and 241(b)(3) of the Immigration and Nationality Act, as amended by this section, shall apply to— (1) all aliens in removal, deportation, or exclusion proceedings; (2) all applications pending on, or filed after, the date of the enactment of this Act; and (3) with respect to aliens and applications described in paragraph (1) or (2), acts and conditions constituting a ground for exclusion, deportation, or removal occurring or existing before, on, or after the date of the enactment of this Act. 1517. Aggravated felonies (a) Definition of aggravated felony Section 101(a)(43) of the Immigration and Nationality Act ( 8 U.S.C. 1101(a)(43) ), as amended by section 1512, is further amended— (1) in subparagraph (A), by striking sexual abuse of a minor