; (2) the head of a relevant university-based center within the Department’s centers of excellence network; and (3) the heads of other appropriate Federal agencies. 436. Open source screening The Secretary shall, to the greatest extent practicable, and in a risk-based manner, review open source information of visa applicants. . (b) Clerical amendment The table of contents in section 1(b) of the Homeland Security Act of 2002, as amended by this Act, is further amended by inserting after the item relating to section 433 the following: Sec. 434. Social media screening. Sec. 435. Open source screening. . 3 Visa cancellation and revocation 1541. Cancellation of additional visas (a) In general Section 222(g) of the Immigration and Nationality Act ( 8 U.S.C. 1202(g) ) is amended— (1) in paragraph (1)— (A) by striking Attorney General, and inserting Secretary, ; and (B) by inserting and any other nonimmigrant visa issued by the United States that is in the possession of the alien after such visa ; and (2) in paragraph (2)(A), by striking (other than the visa described in paragraph (1)) issued in a consular office located in the country of the alien’s nationality and inserting (other than a visa described in paragraph (1)) issued in a consular office located in the country of the alien’s nationality or foreign residence . (b) Effective date and application The amendments made by subsection (a) shall take effect on the date of the enactment of this Act and shall apply to a visa issued before, on, or after such date. 1542. Visa information sharing (a) In general Section 222(f) of the Immigration and Nationality Act ( 8 U.S.C. 1202(f) ) is amended— (1) in the matter preceding paragraph (1), by striking issuance or refusal and inserting issuance, refusal, or revocation ; and (2) in paragraph (2)— (A) in the matter preceding subparagraph (A), by striking and on the basis of reciprocity ; (B) in subparagraph (A)— (i) by striking for the purpose of preventing and inserting the following: “for the purpose of— (i) preventing