Canada and Mexico are the two countries that border the United States.
Do you mean countries? If you do, the two countries that border the U.S. are Canada and Mexico.
Canada and Mexico are the two countries that share a border with the United States.
Canada & Mexico, which are countries, not states.
The longest border separating two countries is the 8,891 kilometers (5,525 miles) boundary between Canada and the United States. It is the world's longest international border between two countries.
Canada in the north, and Mexico in the south.
Canada and Mexico border the United States in the North and South respectively. There are no other countries bordering the United States.
Canada and Mexico
There are no counties that border the United States, but there are two countries that border the U.S. They are Canada and Mexico.
The longest border separating two countries is between Canada and the United States, stretching for about 5,525 miles (8,891 kilometers).
There are two countries that form the borders of the United States: Canada and Mexico. Canada forms the northern border of the United States and Mexico forms the Southern border of the United States.
Only one: the United States of America.