Most of the Canadians or Americans you might probably won’t know this fun little fact, but there are currently 5 border disputes between our two countries. While 4 of them have to do with a water area (who owns what piece of water), there’s one that’s still pretty contentious to this very day – Machias Seal Island, in the Gulf of Maine. Both sides claim this place, and neither wants to give it up.

No one really cared for the island during the American Revolution, and right after, this island was given to the US, and the British/Canadians living there lost their mind. To this date, Machias Seal Island is claimed by both. Canada went as far as building a lighthouse (much like the Market Island situation), and the U.S. refuses to acknowledge it and periodically asks them to not invade their country.

Canada, in return, asks that the US not invade their country, please and thank you.