; (2) 2,750 in fiscal year 2018; (3) 3,000 in fiscal year 2019; (4) 3,250 in fiscal year 2020; and (5) 3,500 in fiscal year 2021. 632. Provisions relating to the exercise of certain appointment and other similar authorities with respect to the United States Border Patrol (a) In general Notwithstanding any other provision of law— (1) all authority described in subsection (b) that (but for this section) would otherwise be vested in the Secretary of Homeland Security shall instead be vested in the head of the United States Border Patrol; (2) an individual may not be appointed or continue to serve as the head of the United States Border Patrol if, at the time of appointment, such individual has not completed at least 20 years of service, within the competitive service (as defined by section 2102 of title 5, United States Code), as a United States Border Patrol agent