How feasible is Trump's proposed wall? Staff
Posted: Apr 08, 2016 4:01 PM
The U.S. - Mexican border is like a 2,000-mile roller coaster that weaves through deserts, mountains and rivers. It crosses four states, 45 cities and dips deep into washes only to rise 10,000 feet in the Coronado National Forest. The soil is soft like a sponge near the Rio Grande and rock hard near the granite quarries of San Diego County.