What is a harmonized system number? how is it used? Space what are the advantages of such a system?

Explain the concept of valuation from the perspective of customs. why is it important to have a detailed Commercial invoice for valuation?

Explain the concept of classification from the perspective of customs. Why is it important to have a detailed commercial invoice for classification ?

Explain the concept of “country of origin” . how is it currently determined? Why is this such a difficult concept? Why is it important?

What are non tariff barriers? Why are they used? Give a few examples

what are the types of quotas in existence? How does the United states enforce the quotas it imposes? What is a merchandise visa?