Roosevelt Reservation
It’s a 60 foot strip of land on the U.S. side of the border with Mexico and was established in 1907 by Presidential Proclamation and is under control of the Federal Government; it was established to keep the land free of obstructions to prevent smuggling over the border.
A 60 foot strip of land on the border under control of the Federal Government? There’s the right of way for the wall...
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That’s jogging a memory. Around about the time of the Bundy stand off, there was some reporting on the Bureau of Land Management trying to stake a claim along the shores of the Rio Grande.
Reviewing the litigation regarding the actual border between USA and Mexico, there’s a section where the Northern Bank was found to belong to an Indian Tribe. Further complications regarding the changing path of the river over time, and how BLM wanted to add land to BLM control, but never going the other way to landowners.
Don’t recall the exact details now.