[SuperLuminal]

"...found Rivera's body between the primary and secondary border fences about 83 miles north of the United States-Mexico border...."

The fence does its job...
Excrement happens when you don't stay where you belong!

OTOH, why is the border fence located 83 miles north of the border?

[Nathan _in_Arkansas]

I believe it says “between the primary and secondary fence.” The secondary fence is much further inside the border. Just like CBP highway checkpoints are usually 20-50 miles inside the border.