; and ; and (3) by adding at the end the following new paragraph: (2) the term unmanned aerial systems has the meaning given the term unmanned aircraft system in section 44801 of the FAA Modernization and Reform Act of 2018 ( Public Law 115–254 ; 49 U.S.C. 40101 note). . 413. Continuous screening by U.S. Customs and Border Protection (a) In general Subtitle B of title IV of the Homeland Security Act of 2002 ( 6 U.S.C. 211 et seq.), as amended by this title, is further amended by adding at the end the following new section: 420A. Continuous screening The Commissioner of U.S. Customs and Border Protection shall, in a risk based manner, continuously screen individuals issued any visa, and individuals who are nationals of a program country pursuant to section 217 of the Immigration and Nationality Act ( 8 U.S.C. 1187 ), who are present, or are expected to arrive within 30 days, in the United States, against the appropriate criminal, national security, and terrorism databases maintained by the Federal Government. . (b) Clerical amendment The table of contents in section 1(b) of the Homeland Security Act of 2002 is amended by inserting after the item relating to section 420, as added by this title, the following new item: Sec. 420A. Continuous screening. . 414. Customs Trade Partnership Against Terrorism (a) In general Subtitle B of title II of the Security and Accountability for Every Port Act of 2006 ( 6 U.S.C. 961 et seq.) is amended to read as follows: B Customs Trade Partnership Against Terrorism 211. Establishment of the Customs Trade Partnership Against Terrorism program (a) In general There is established within U.S. Customs and Border Protection a voluntary government-private sector partnership program to be known as the Customs Trade Partnership Against Terrorism (CTPAT). (b) Purpose The purposes of the CTPAT program are to— (1) strengthen and improve the overall security of the international supply chain and United States border security