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Foreign trade being an essential part of a nation's economy, governmental restrictions are sometimes necessary to protect national interests. Govern­ment actions may occur in response to the trade policies of other countries or in order to protect specific depressed industries. Since the beginnings of for­eign trade, nations have tried to maintain a favourable balance of trade – that is, to export more than they import.

Products are known to be bought and sold in the international market with national currencies. Seeking to improve its balance of international pay­ments, that is, to increase reserves of its own currency and reduce the amount held by foreigners, a country may attempt to limit imports. The aim of such policy is to control the amount of currency that leaves the country.

One method of limiting imports is simply to close the channels of entry into a country. Usually maximum allowable (разрешенный) import quantities known as quotas may be set for specific products. These may also be used to limit the amount of foreign or domestic currency that is allowed to cross national bor­ders. Having been imposed, quotas serve as the quickest means of stopping or even reversing (зд. изменять) a negative trend in a country's balance of payments as well as of protecting domestic industry from foreign competition.

Another common way of restricting imports is by imposing tariffs or taxes on imported goods. A tariff paid by the buyer of the imported product makes the price higher for that good in the importing country. The higher price re­duces consumer demand, effectively restricting the import. The taxes collect­ed on the imported goods also increase revenues for the nation's government. Tariffs also serve as a subsidy to domestic producers of the goods taxed be­cause the higher price resulting from a tariff is an incentive for the competing domestic industry to expand production.

In recent years the use of non-tariff barriers to trade has increased. It may result in some administrative regulations that discriminate against foreign goods and in favour of domestic ones. These regulations may include various measures such as adopting special domestic tax policies or strict standards on imported goods, delaying imports at the country's boundaries, ordering gov­ernment officers to use domestically produced goods. Direct government sup­port of depressed domestic industries is considered as a non-tariff barrier to trade, as such support puts the aided industries at an unfair (несправедливый) advantage among trading nations. However, these barriers are not necessarily imposed by a government, for example organized public campaigns "buy only American" or "don't buy beef of mad cows" may be effective as well.

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1. Governmental restrictions in foreign trade can be imposed ...

2. To increase the amount of national currency ...

3. Quotas are known to be ...

4. Both tariffs and taxes are used ...

5. It is important that non-tariff barriers ...