For Native Americans, US-Mexico border is an 'imaginary line'

(THE CONVERSATION) Immigration restrictions were making life difficult for Native Americans who live along – and across – the U.S.-Mexico border even before President Donald Trump declared a national emergency to build his border wall.

The traditional homelands of 36 federally recognized tribes – including the Kumeyaay, Pai, Cocopah, O’odham, Yaqui, Apache and Kickapoo peoples – were split in two by the 1848 Treaty of Guadalupe Hidalgo and 1853 Gadsden Purchase, which carved modern-day California, Arizona, New Mexico and Texas out of northern Mexico.

https://www.sfgate.com/news/article/For-Native-Americans-US-Mexico-border-is-an-13699164.php