Last October, my husband and I crossed the US-Mexico border in a VW campervan, heading southbound from California to Argentina.
For those that can remember, the contract, which named Boeing as a prime contractor to build a security fence on the US- Mexico border, was terminated in 2011, because it was considered to be too expensive and ineffective.
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Ciudad Juarez, on the Mexico-US border, is one of the world's most violent cities.
While Martinez and Graham are modern artists, Gonzalez uses a 17th Century Baroque style to paint scenes of violence along the Mexico-US border.
At the same time, new outbreaks of dengue fever on the Mexican side of the Texas-Mexico border had US officials worried that the virus would slowly spread north.
But this is just a tiny part of the border between Mexico and the US that stretches for nearly 2, 000 miles (3, 220km).
Virtual border guards are also being tested, with the US Customs and Border Protection trialling a kiosk at Dennis DeConcini Port in Nogales, Arizona, a border crossing between the US and Mexico.
With some planning, an open mind and a willingness to problem solve, camping is a rewarding way to see this incredibly diverse region, which stretches from Mexico's wide northern border with the US to the skinny southern tip of Panama.
About 11 million people are in the US illegally, many of them coming across the border from Mexico.
The issue of illegal migration, and the treatment of Mexicans on the border, is a source of abiding tension between the US and Mexico.
Mexico has repeatedly asked for US help in stemming the flow of weapons over the border.
BBC: Mexican arrested over US agent 'Fast and Furious' murder
Juarez, on border with the US, saw more than 3, 000 murders in 2010, making it by far Mexico's deadliest city.
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