; applicability (1) Effective date The amendments made by this section shall take effect on the first day of the first fiscal year beginning on or after the date of the enactment of this Act. (2) Invalidity of certain petitions and applications Excepted as provided in paragraph (3), any petition under section 204 of the Immigration and Nationality Act ( 8 U.S.C. 1154 ) seeking classification of an alien under a family-sponsored immigrant category that was eliminated by the amendments made by this section and filed on or after the date of enactment of this Act and any application for an immigrant visa based on such a petition shall be considered invalid. (3) Valid offer of admission Notwithstanding the termination by this Act of the family-sponsored and employment-based immigrant visa categories, any alien whose petition or application for a visa subsection (a) or (b) of section 203 of the Immigration and Nationality Act, as in effect on the day before the date of the enactment of this Act, was approved and who is scheduled to receive an immigrant visa in the applicable preference category not later than 1 year after the date of the enactment of this Act, shall be entitled to such visa if the alien enters the United States within 1 year after such date of enactment. 5. Replacement of employment-Based immigration categories with immigration points system (a) Worldwide level of immigration Section 201 of the Immigration and Nationality Act ( 8 U.S.C. 1151 ) is amended— (1) in subsection (a), as amended by section 2(b)(1)(B), by amending paragraph (2) to read as follows: (2) points-based immigrants described in section 203(b) , in a number not to exceed— (A) the number specified in subsection (d) during any fiscal year; or (B) 50 percent of the number specified in subsection (d) during the first 6 months of any fiscal year.