russia is the closest country and it does not touch the border of the US!!! :)
Russia.The Diomede islands in the Bering Strait are separated by 2.4 miles. East Diomede Island is part of the state of Alaska, and West Diomede is governed by the Far Eastern Federal District of Russia.
Canada and Mexico share a border with the United States.
Canada and Mexico share land borders with the United States, making them the closest countries to the United States. The closest country to the US with which the US does not share a border is Russia, at the Bering Strait.
Mexico and Canada both share borders with the US.
At their closest point, Mexico and the US are 0 miles apart, as they share a border.
Hawaii
Russia and Alaska share a maritime border.
Two countries share a border with the United States. To the north, the US shares a border with Canada. To the south, the US shares a border with Mexico.
Canada and Mexico physically touch the US, meaning they share a border. Russia, Cuba, and the Bahamas are countries near the US that do not share a border.
Too many to name them all, twelve in the US north and four in the south.
California, Arizona, New Mexico, and Texas are the US states on the border with Mexico.