19 U.S.C. § 4436
Application to new and existing preclearance operations
Except for sections 814(d) [ 19 U.S.C. 4433(d) ], 815, 817 [ 19 U.S.C. 4435 ], and 818, this subchapter shall only apply to the establishment of preclearance operations in a foreign country in which no preclearance operations have been established as of February 24, 2016 .
( Pub. L. 114–125, title VIII, § 819 , Feb. 24, 2016 , 130 Stat. 222 .)