system principles under section 2301. (k) Sunset The authorities under subsections (b) and (c) shall terminate on September 30, 2024. Any bonus to be paid pursuant to subsection (b) that is approved before such date may continue until such bonus has been paid, subject to the conditions specified in this section. . (b) Technical and conforming amendment The table of sections for chapter 97 of title 5, United States Code, is amended by adding at the end the following new item: 9702. U.S. Customs and Border Protection temporary employment authorities. . 404. Study on efficacy of certain personnel screening methods for U.S. Customs and Border Protection use (a) In general Not later than 60 days after the date of the enactment of this Act, the Secretary of Homeland Security shall enter into an agreement with the National Academy of Sciences to conduct a study on the efficacy of certain personnel screening methods for U.S. Customs and Border Protection use. Such study shall include the following: (1) A review of the appropriateness of the use of polygraph examinations in determining candidate suitability during the U.S. Customs and Border Protection hiring process. (2) A cost-benefit analysis of using polygraph examinations for candidate suitability during the U.S. Customs and Border Protection hiring process. (3) A review of research related to alternatives to polygraph examinations appropriate for use during the U.S. Customs and Border Protection hiring process. (b) Matters included The study required under subsection (a) shall— (1) assess prior scientific, academic, and government literature on the topics described in such subsection