Porous Texas border fence foreshadows challenges for Trump's wall

From there, near Brownsville, it stretches about 60 miles west, but with plenty of gaps to drive or walk through. The porous South Texas border fence, authorized in 2006, underscores how topography, treaty obligations, legal fights and high costs could frustrate efforts to stretch an “impenetrable” wall over the 2,000-mile border - the signature campaign promise of U.S. President-elect Donald Trump. The South Texas barrier is "more holes than it is fence," said Denise Gilman, a law p