Manifest Prep exists to give you practice you can trust. This page explains where the questions come from, how each one is checked, and what we do not do.
Last reviewed 12 October 2026.
Where the questions come from
381 questions from CBP's five most recent published sittings (May 2024 to April 2026), reproduced word for word with CBP's own answer keys. CBP publishes these as public-domain US government works.
493 questions we write ourselves on provisions the past papers do not cover, labelled as ours.
19 CFR and the HTSUS, which every explanation cites, checked against saved regulation text.
How every question is checked
Questions are drafted against the saved source text, not from memory, and each one names the source it relies on. CBP's past questions are reproduced as published, with CBP's answers.
A separate checking pass then re-derives every answer from that source without trusting the draft's own explanation. It confirms the keyed answer is right, that no other option is also right, and that every figure and citation matches. Anything it cannot confirm is fixed or removed before publication, and the finding is recorded.
Automated checks look for answer patterns that would let you guess without knowing the material, such as the longest option or a word echoed from the question.
Every exam page shows the official exam facts (format, pass mark, fee, booking) with the sources and the date we checked them.
Keeping it current
The 19 CFR sections the bank relies on are checked every month, and we check for each newly published sitting. Where a later rule change affects an official past question, we keep CBP's answer and add a dated note on current law. Competitor comparisons and the exam facts on each page are re-checked every month.
What we do not do
We do not use recalled, leaked or reconstructed live exam questions.
We do not promise you will pass. If the full bank does not work for you, you can have a refund within 14 days.
Manifest Prep is an independent study aid and is not affiliated with or endorsed by U.S. Customs and Border Protection.
Spotted an error?
Email [email protected] with the question and what you think is wrong. We check it against the source, correct it if needed, and the fix goes into the next update.