Mexico is the closest country south of the US, as it borders the US to the south.
The US is the closest country.
Chile is the southern hemisphere country that is closest to the US. Both countries have territories near the 90°W line of longitude at their closest points.
Bahamas
Mexico.
Russia.
Russia's closest spot to the US is approximately 3 miles (from Alaska).
Mexico is the Spanish-speaking country closest to the United States.
Mexico borders the US along much of the southwest.
The closest country to Bermuda is the United States. Specifically, the state of North Carolina is located closest to Bermuda, approximately 650 miles away.
Mexico
Cuba