con: If the government wants to protect import competing industries and its workers from foreign competition, it can impose a tax on imports called a Another restriction with a similar outcome would be to impose a limit on the amount of a specific good that can be imported. This restriction is called a Which of the following is not a non-tariff barrier to trade? O A. Embargos O B. Health and safety requirements O c. Quotas O D. National security grounds O E. Ad valorem tax on imports