[Source or answer dispute] Official B, D, E · §146.64 bars privileged foreign · domestic bar not in cited rule

What you will learn

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

Exam cover instruction; Exam cover reference list (CFR); Exam category heading; Question 78 stem; Question 78 choices A–E; Answer key row 78; Answer key reference materials (version inconsistency, disclosed only); 19 CFR 146.64(a) (2020); 19 CFR 146.64(b) (2020); 19 CFR 146.64(c) (2020); 19 CFR 146.64(d) (2020); 19 CFR 146.43(a) (2020); 19 CFR 146.43(c) (2020); 19 CFR 146.64 (2020) govinfo XML; 19 CFR 146.43 (2020) govinfo XML · April 21, 2021 Customs Broker License Examination (Series 860), Category XV – Foreign Trade Zone/Warehouse, question 78 on exam PDF page 33 (rendered locally from original-exam.pdf and viewed); 'April 2021 Broker License Exam Answer Key' row 78 on key PDF page 3 (rendered and viewed). Cover reference: Title 19, Code of Federal Regulations (2020 Revised as of April 1, 2020). 19 CFR 146.43 and 146.64 (2020), all paragraphs, read from retained govinfo XML/text. The key's closing reference list names the 2019 CFR revision; the cover edition (2020) is used and the inconsistency is disclosed, not harmonized.
Explained using the historical edition for this exam.