Answer:
non-tariff barrier
Explanation:
Based on the information provided within the question it can be said that this can be referred to as a non-tariff barrier. this term refers to a trade restriction which is not a tariff and is instead anything else such as quotas, embargoes, sanctions, or in this case unnecessary inspections. Since the inspectors are forced to inspect every single watch as thoroughly as possible wasting time and money for the person shipping the product.
A law stating that as the price of a good increases, the quantity demanded of the good decreases, and that as the price of a good decreases, the quantity demanded of the good increases.
This might be late but here is an explanation, the New Deal only helped with political agendas. It could not end the Great Depression.