; (b) ensure a sufficient number of United States Customs and Border Protection officers are available at any airport designated as a port of entry under subsection (a) in order for landing rights requests to be granted in accordance with section 122.14 of title 19, Code of Federal Regulations. 535. None of the funds appropriated by this Act for U.S. Immigration and Customs Enforcement shall be available to pay for an abortion, except where the life of the mother would be endangered if the fetus were carried to term, or in the case of rape or incest: Provided , That should this prohibition be declared unconstitutional by a court of competent jurisdiction, this section shall be null and void. 536. None of the funds appropriated by this Act for U.S. Immigration and Customs Enforcement shall be used to require any person to perform, or facilitate in any way the performance of, any abortion. 537. Nothing in the preceding section shall remove the obligation of the Assistant Secretary of Homeland Security for U.S. Immigration and Customs Enforcement to provide escort services necessary for a female detainee to receive such service outside the detention facility: Provided , That nothing in this section in any way diminishes the effect of section ____ [preceding section] intended to address the philosophical beliefs of individual employees of U.S. Immigration and Customs Enforcement. 538. In fiscal year 2018, nonimmigrants shall be admitted to the United States under section 101(a)(15)(H)(ii)(a) of the Immigration and Nationality Act ( 8 U.S.C. 1101(a)(15)(H)(ii)(a) ) to perform agricultural labor or services, without regard to whether such labor is, or services are, of a temporary or seasonal nature. 539. (a) Notwithstanding subsections (a) and (b) of section 201 of the Immigration and Nationality Act, Christopher William Gard, Constance Rhoda Keely Yates, and Charles Matthew William Gard shall each be eligible for issuance of an immigrant visa or for adjustment of status to that of an alien lawfully admitted for