[Incomplete question conditions] Official B · welt line 6403.91.30 · welt-upper-lip seam not stated

What you will learn

Disputed-question explanation: official result first, then historical evidence, limitations and uncertainty.

Exam cover instruction; Exam cover reference list (HTSUS); Exam category table; Question 43 stem; Question 43 choices A–E; Exam PDF page 19 (question 43); Key row 43; Key PDF page 2 (row 43); Chapter 64 note 4(a); Chapter 64 note 4(b); Additional U.S. Note 1(a) to Chapter 64; Heading 6403 and 6403.40 (choice A); Heading 6404 / 6404.11.20 (choice C); 6404.11.90 (choice D); Heading 6405 / 6405.10.00 (choice E); 2019 Basic page 64-23 (6403.91); H200437 facts (lip, welt, stitching); H200437 analysis (no right-angle requirement); H200437 analysis (continuous stitching; outsole stitching); H200437 holding; Pipeline Codex independent Q43 review (constraints); conflict-batch18 review (Q43 item) · October 17, 2019 Customs Broker License Examination (Series 860), Category VI – Classification (questions 30–43), question 43 on exam PDF page 19 (rendered locally to /tmp and viewed); 'October 2019 Customs Broker License Exam Answer Key' row 43 on key PDF page 2 (rendered locally to /tmp and viewed). Cover reference: HTSUS 2018 and/or 2019 Basic Edition, No Supplements. HTSUS 2019 Basic Edition Chapter 64 notes 1–4, subheading note 1, additional U.S. notes 1–6 and statistical notes read in the retained text; headings 6403, 6404 and 6405 lines for all five choices read; retained pipeline-64-23.png (printed page 64-23) physically viewed. CBP HQ H200437 (November 20, 2012) read in full as interpretive evidence on a similar boot; it is not on the exam reference list.
Explained using the historical edition for this exam.