The United States has 2 land borders, including: Mexico, with more than 40 border posts along the entire land border. Canada, which has 13 border posts on US territory, and 8 posts on Canadian territory
The United States is the country with the most airports in the world. Most cities have one or more airports which make traveling in the United States easy. It is also possible to enter by sea, by private boat or by cruise ship, from different points of the country. There are more than 300 seaports around the whole territory.