In 1967 the residents of a US-Mexico border town discovered they weren't Mexican citizens but were actually American.
For years everyone had assumed Rio Rico was part of Mexico because it lay south of the river that forms the border. During the 1920s, when Prohibition was extended through the US, Rio Rico became known for drinking, gambling and prostitution. But little did they know that before 1906, Rio Rico actually lay to the north of the river and was therefore American territory. ยูฟ่า168