The United States has a great tradition of welcoming international visitors to the country for tourism, study and business. If you are planning a visit to the United States, find out how you can travel and what documentation you need. You also need to purchase visitor insurance or a foreign insurance to cover the potentially high cost of medical care in the United States.
Canadian citizens and people from countries on the Visa Waiver program can travel to the US without a visa, so long as they meet US requirements. All these travelers must find out before travel whether they can enter the country and which electronic form they need to fill.
Citizens from other countries need a visa to enter the United States. The visa is granted to allow a visitor to request permission to enter the country at a border crossing or airport. There are different visas for different purposes.
Visitors to the United States come for many reasons, such as medical treatment, tourism, study or business. Your visa is linked to the purpose of your trip and you should consult the US Embassy to see which one you need.