OBS_VALUE: <ul><li><a href=http://uscode.house.gov/view.xhtml?req=(title:19%20section:3801%20edition:prelim)%20OR%20(granuleid:USC-prelim-title19-section3801)&f=treesort&edition=prelim&num=0&jumpTo=true target=_blank>Bipartisan Trade Promotion Authority Act of 2002(19 U.S.C. Ch. 24 (2017))</a></li><li><a href=https://www.cbp.gov/travel/preclearance target=_blank>U.S. Customs and Border Protection(Preclearance)</a></li></ul>