In recent years there has been a flurry of bi-lateral trade deals between countries and the emergence of regional trading blocs. For example, the European Union now has over 30 separate international trade agreements including those with countries such as Colombia and South Korea.
Since 2008 all US citizens MUST have a US passport to be allowed to enter the United States. If your aunt travelled to Jamaica with just her US naturalisation certificate, she would not be able to board her plane back to the US. She would have to come to the Embassy to apply for a passport in order to return home. Issuing a new passport takes at least a week, so this could extend her holiday much longer than she had planned. The good news is that she can apply for a US passport before she leaves the United States.
Crossing Into Canada. You'll need your U.S. passport to travel into Canada by air. Since the Western Hemisphere Travel Initiative went into effect in 2009, you can cross into Canada by land or water with any approved travel document.These include a U.S. passport or a less expensive passport card that is good for land or sea crossings.ourist Visa. U.S. citizens crossing into Canada as tourists can stay in the country for 180 days without a visa. A few special cases can hamper this trouble-free tourist trip. If you have any criminal record, even for misdemeanors, you'll need to obtain a rehabilitation approval in advance.