c'mon now eloisa, you already KNOW the answer to your question!

because it's a GOLF course for the RICH WHITE GOOD OL' BOYS. that's why there is NO border fence. poor people from south of the border will NEVER cross a GOLF COURSE you silly goose! they have 'guard pros' on duty
the rich just get richer (AND whiter)

Homeland Security Won't Explain Why the Mexican Border Wall Bypasses the Rich and Connected
By Melissa del Bosque , Texas Observer.
As the U.S. Department of Homeland Security marches down the Texas border serving condemnation lawsuits to frightened landowners, Brownsville resident Eloisa Tamez, 72, has one simple question. She would like to know why her land is being targeted for destruction by a border wall, while a nearby golf course and resort remain untouched.
Tamez, a nursing director at the University of Texas at Brownsville, is one of the last of the Spanish land grant heirs in Cameron County. Her ancestors once owned 12,000 acres. In the 1930s, the federal government took more than half of her inherited land, without paying a cent, to build flood levees.
Now Homeland Security wants to put an 18-foot steel and concrete wall through what remains.
While the border wall will go through her backyard and effectively destroy her home, it will stop at the edge of the River Bend Resort and golf course, a popular Winter Texan retreat two miles down the road. The wall starts up again on the other side of the resort.
"It has a golf course and all of the amenities," Tamez says. "There are no plans to build a wall there. If the wall is so important for security, then why are we skipping parts?"
Along the border, preliminary plans for fencing seem to target landowners of modest means and cities and public institutions such as the University of Texas at Brownsville, which rely on the federal government to pay their bills.......