McALLEN, Texas—Republican presidential candidates are vowing to finish former President Donald Trump’s long-promised wall along the U.S.-Mexico border. But a host of issues—including securing land and navigating difficult terrain—makes it much more complicated than campaign promises make it sound.
The farther west you go along the southern border’s nearly 2,000 miles, the more likely you’ll encounter physical border barriers.
Harvest Prude is a former reporter at The Dispatch.
