03/28/2013 05:36 pm ET

U.S. Border Patrol: More Agents, More Fences, More Technology, More Horses?

Immigration enforcement and drug smuggling continue to be top priorities for the Department of Homeland Security, and the Border Patrol's budget has swelled accordingly, increasing from just $262,647 in 1990 to over $3.5 million dollars in the 2012 fiscal year. They've added more agents, more technology, and higher fences.

Despite such progress, human smugglers and drug traffickers have simply pushed further into mountainous, difficult terrain to avoid detection.

That's where horses come in.

Read more on ABC News/Univision

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