Governments have used two general kinds of trade barriers-tariff and non- tariff barriers. A tariff is a direct tax on imported goods. Like the U.S. governs- mint’s 54-cents-per-gallon tax on imported ethanol, tariffs increase the cost of imported goods relative to that of domestic goods. For example, the U.S. import tax on trucks is 25 percent. This means that U.S. buyers must $25 for a pay imported truck valued at $20,000, with $5,000 going to the us Government As a result fewer than 10,000 pickup trucks imported by the United States each are year. Nontariff barriers are nontax methods of increasing the cost or reducing the volume of imported goods. They are five types of nontariff barriers they can be even more potent methods of shielding domestic industries from foreign competition.