What Us State Has The Longest Border?

Did you know that Alaska has the longest border with Canada of any US state? At almost 2,000 miles long, it is the only state to have a border with two different countries. The US-Canada border follows the Rocky Mountains and Alaska Range for much of its length. The unique topography of the region makes it a challenge to patrol and maintain control over this expansive border. In addition, wildlife conservation is an important issue in this area, as many endangered species inhabit both sides of the international boundary.