contents in section 1(b) of the Homeland Security Act of 2002 is amended by inserting after the item relating to section 419 the following new item: Sec. 420. Air cargo advance screening program. . 7. Third party canine cargo screening Section 1307 of the Implementing Recommendations of the 9/11 Commission Act of 2007 ( 6 U.S.C. 1116 ) is amended— (1) by striking subsections (f) and (g)