USA
Into the United States it is allowed to import cash in any quantity, although without declaring it, no more than $ 10,000 is allowed, considering another currency. Alcohol is allowed to import only to people who have reached the age of 21, and no more than 1 liter. In some states, the limit for duty-free import of alcohol is even lower, so it's better to find it out in advance. As for cigarettes, you can take with you 1 block (or 50 cigars), while Cuban cigars are forbidden to import in any quantity.
If you take gifts with you, keep in mind that their cost should not exceed $100. Items for personal use (not including clothes, shoes, jewelry) are allowed to be imported if the cost doesn’t exceed $25.
What is important, into the States you cannot bring vegetables, fruits or any other food. Everything, even the bitten apple, which you have not eaten during the flight, is subject to declaration. Fish and meat, dairy products, medicines with possible narcotic effect (without a doctor's prescription), home canning, all kinds of lighters and matches are under the ban. You may also not be allowed to go on board with sweets that contain alcohol. Please note, the customs department scans every luggage!
Canada
Into Canada you can safely take with you a currency that is equivalent to 10 thousand Canadian dollars (about $ 7,700), a larger amount will have to be declared. Canadian Customs also permits to import 200 cigarettes (50 cigars), 1.1 liters of strong spirit or 8.5 liters of beer. The cost of all the things that are carried as gifts should not be more than 300 dollars. Any personal things in reasonable quantities do not have to be declared.
Into this country it is not allowed to import food with short shelf life, meat and dairy products that are not canned, drugs with narcotic effect, as well as plants and seeds.
South America countries
Most countries in South America have similar import rules and prohibitions. Into Argentina, Chile, Brazil, Ecuador and Peru, you can import duty free about 400 cigarettes. As for alcohol, into Argentina is allowed to import 1 liter, into Chile - 2.5 liters, into Peru and Ecuador - 3 liters of strong spirits. Brazilian customs in this regard is very loyal, because into this country you can bring up to 24 items (bottles to 1 liter) of alcoholic beverages!
Into Argentina, Brazil, Chile and Ecuador it is prohibited to bring any meat, fish or dairy products, plants and vegetables. Counterfeit and pornographic products are also banned. But into Peru, you can safely import the above-mentioned food, but only in if it is canned food. It is interesting that you cannot bring a new computer, laptop or TV to Argentina, and the information about the imported mobile phone must be indicated in the declaration.
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