It states that your passport has been inspected and that everything is valid. It will usually give permission for you to visit a country for a specific time period and purpose. Some countries in the world require that you be issued a visa before you are allowed to enter their country. They may also have special requirements if you plan a particularly long stay or will be doing business while visiting. You ll need to make sure to have all the papers you ll need.
All travel documents are the responsibility of the passenger.
Your ticket to get there won t do any good if you don t have the required paperwork. You should contact the embassy or consulate of each country you ll be visiting for information on the paperwork needed for entry. Remember to allow plenty of time for the paperwork to be processed before you travel. Visas often require several weeks to be processed. This page contains links to many foreign countries Embassies and Consulate Offices located in the United States.