; and (B) expand the integrated surveillance and intrusion detection system at land ports of entry along the northern and southern borders of the United States. (2) Authorization of appropriations In addition to amounts otherwise authorized to be appropriated for such purpose, there is authorized to be appropriated $33,000,000 for fiscal years 2024 and 2025 to carry out paragraph (1). (c) Upgrade of license plate readers at ports of entry (1) Upgrade Not later than two years after the date of the enactment of this Act, the Commissioner shall upgrade all existing license plate readers in need of upgrade, as determined by the Commissioner, on the northern and southern borders of the United States. (2) Authorization of appropriations In addition to amounts otherwise authorized to be appropriated for such purpose, there is authorized to be appropriated $125,000,000 for fiscal years 2023 and 2024 to carry out paragraph (1). 107. U.S. Customs and Border Protection personnel (a) Retention bonus To carry out this section, there is authorized to be appropriated up to $100,000,000 to the Commissioner to provide a retention bonus to any front-line U.S. Border Patrol law enforcement agent— (1) whose position is equal to or below level GS-12 of the General Schedule; (2) who has five years or more of service with the U.S. Border Patrol