How Feasible is Trump's Proposed Wall?

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.

GOP presidential candidate Donald Trump wants to build a 'big, beautiful wall' across the entire border. Is that advisable or even feasible? Fox News asked one group whose opinion actually matters: the men and women who patrol it each day on foot, horseback, ATV, helicopter and SUV -- the U.S. Border Patrol.

"One person makes the stand, 'We need a wall, We need a wall'. Well, you never bothered asking the agents - what all do we need?" asked Art Del Cueto, a long time Tucson Border Patrol agent. "It is not just the wall. There are many things we need to perform our jobs effectively."

After a conference call with agents from several sectors representing every state on the Southwest border, they seemed to zero in on certain conclusions:

-- Whether you call it a wall, or a fence, agents say they work.

-- A cinder block or rock wall, in the traditional sense, isn't necessarily the most effective or desirable choice. Seeing through a fence allows agents to anticipate and mobilize, prior to illegal immigrants actually climbing or cutting through the fence.

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