The USA embassy online provides all details that is required for a person to travel to some other country. Firstly the person has to have a valid passport and then apply for visa for traveling to other countries. Visa is nothing but a right given to a person who has applied to enter a country for which he has applied for. This is a document and it is provided by the official immigration service people and it consists of a stamp on the passport. In very few countries they do not require this visa for traveling, but in almost all countries they require visa for a person to travel and also that person can stay there only till there is validity mentioned in the visa.
Sometimes the details provided or given in USA embassy information may not be sufficient for a person to apply visa. He might have so much of doubts like whom to visit, where to go etc, in such cases there are few travel agents who will help you in getting visa on behalf of you. For this service you will have to pay him some amount as his service fee. But you will have to be careful with such travel agents because there are chances of fraudulent activities happening everywhere. But nowadays making use of USA embassy online details is more sufficient. Because all the updated details will be provided online and also the process will be perfect and simple rather going to local travel agents. The details provided in USA embassy information will be more prompt and also very user friendly.
USA embassy in Canada has its own privacy policy mentioned in the site. When you visit this site, there will be personal information's inquired about the visitor but still they save very few important details of users on an automatic system. The USA embassy in Canada site provides you all such information's that is required to travel to Canada or any other location. They collect such information from users to just know how much it is useful to visitors and also how they can improvise further on their site.