; or (2) fails to depart the United States not later than the date that is 30 days after last day of the alien’s authorized period of stay (as described in section 214(a)(1)). . (f) Requirement that all nonimmigrants have a specified authorized period of stay end date Section 235(a) of the Immigration and Nationality Act ( 8 U.S.C. 1225(a) ) is amended by adding at the end the following: (6) Period of stay Any alien who an examining immigration officer has determined to be admissible as a nonimmigrant, except for aliens who are admissible under subparagraph (A)(i), (A)(ii), (G)(i), (G)(ii), or (G)(iii) of section 101(a)(15), or who such officer has determined to be eligible for parole— (A) shall be admitted or paroled, as appropriate, into the United States for a specific period; and (B) shall be issued documentation stating the end date of the alien’s period of stay in the United States. . (g) Effective date; applicability (1) In general This section and the amendments made by this section shall— (A) take effect on the date of enactment of this Act; and (B) apply only to new visas, initial admissions of nonimmigrants, and initial requests for change of status from a nonimmigrant category to another nonimmigrant category under section 248 of the Immigration and Nationality Act ( 8 U.S.C. 1258 ). (2) Previously admitted individuals An individual previously admitted to the United States on a nonimmigrant visa who is present in the United States before the date of the enactment of this Act shall not be subject to this section or to the amendments made by this section until the alien departs from the United States or requests a change of nonimmigrant classification under section 248 of the Immigration and Nationality Act ( 8 U.S.C. 1258 ).