Colombian police help carry people's household belongings across the Tachira River from Venezuela, top, to Colombia, on the border that separates San Antonio del Tachira, Venezuela from Villa del Rosario, Colombia, Tuesday, August 25, 2015, during a mass exodus of Colombians. Venezuelan President Nicolas Maduro vowed to extend a crackdown on illegal migrants from neighboring Colombia he blames for rampant crime and widespread shortages, while authorities across the border struggled to attend to droves of returning deportees. (Photo by Eliecer Mantilla/AP Photo)

People carry their household belongings across the Tachira River from Venezuela, foreground, to Colombia, near San Antonio del Tachira, Venezuela, Tuesday, August 25, 2015, during a mass exodus of Colombians living on the Venezuelan side of the border. (Photo by Eliecer Mantilla/AP Photo)

People cross the Tachira River from Venezuela, behind, to Colombia, on the border that separates San Antonio del Tachira, Venezuela, from Villa del Rosario, Colombia, Tuesday, August 25, 2015, during a mass exodus of Colombians. (Photo by Eliecer Mantilla/AP Photo)

Colombian police watch people carry their household belongings across the Tachira River from Venezuela, top, to Colombia, on the border that separates San Antonio del Tachira, Venezuela from Villa del Rosario, Colombia, Tuesday, August 25, 2015, during a mass exodus of Colombians. (Photo by Eliecer Mantilla/AP Photo)

Colombian police stand in the Tachira River to help people carrying their household belongings from Venezuela, top, to Colombia, on the border that separates San Antonio del Tachira, Venezuela from Villa del Rosario, Colombia, Tuesday, August 25, 2015, during a mass exodus of Colombians. (Photo by Eliecer Mantilla/AP Photo)

Colombian police help fellow citizens carry their belongings across the Tachira River into Colombia's community of La Parada, across the border with San Antonio del Tachira, Venezuela, Tuesday, August 25, 2015. (Photo by Efrain Patino/AP Photo)

A Colombian man carries live fowl across the Tachira River toward Colombia's community of La Parada, across the border with San Antonio del Tachira, Venezuela, Tuesday, August 25, 2015. (Photo by Efrain Patino/AP Photo)

People carry their belongings while crossing the Tachira river border with Venezuela into Colombia, near Villa del Rosario village August 25, 2015. (Photo by Jose Miguel Gomez/Reuters)

People carry their belongings across the Tachira River from San Antonio del Tachira, Venezuela, toward Colombia, Tuesday, August 25, 2015. (Photo by Eliecer Mantilla/AP Photo)

Colombian police stand by as some of their countrymen move their belongings across the Tachira River into Colombia's community of La Parada, across the border with San Antonio del Tachira, Venezuela, Tuesday, August 25, 2015. (Photo by Efrain Patino/AP Photo)

Colombian carry their belongings over from Venezuela as they cross the Tachira river close to Cucuta city, Colombia August 24, 2015. Venezuela has intensified deportations of Colombians since President Nicolas Maduro ordered the closure of two border crossings last week, Colombia's migration office said on Monday, in some cases separating children from their parents. (Photo by Juan Pablo Cohen-La Opinion/Reuters)

A man carries a refrigerator while crossing the Tachira river border with Venezuela into Colombia, near Villa del Rosario village August 25, 2015. The ongoing crisis on the border between Colombia and Venezuela should not be used for political point-scoring by leaders in either country ahead of elections in coming months, the Colombian government said on Tuesday. (Photo by Jose Miguel Gomez/Reuters)

Colombian policemen carry items belonging to people arriving in Colombia while crossing the Tachira river border with Venezuela, near Villa del Rosario village August 25, 2015. (Photo by Jose Miguel Gomez/Reuters)

Colombian policemen carry items belonging to people arriving in Colombia while crossing the Tachira river border with Venezuela, near Villa del Rosario village August 25, 2015. (Photo by Jose Miguel Gomez/Reuters)

People carry their belongings while crossing the Tachira river border with Venezuela into Colombia, near Villa del Rosario village August 25, 2015. (Photo by Jose Miguel Gomez/Reuters)

People carrying their belongings arrive in Colombia after crossing the Tachira river border with Venezuela, near Villa del Rosario village August 25, 2015. (Photo by Jose Miguel Gomez/Reuters)

People with their belongings arrive in Colombia after crossing the Tachira river border with Venezuela, near Villa del Rosario village August 25, 2015. (Photo by Jose Miguel Gomez/Reuters)

People carry their belongings while crossing the Tachira river border with Venezuela into Colombia, near Villa del Rosario village August 25, 2015. (Photo by Jose Miguel Gomez/Reuters)

Venezuelans wait in line to cross the border into Venezuela, near Villa del Rosario village, Colombia, August 25, 2015. (Photo by Jose Miguel Gomez/Reuters)

People carry their belongings after crossing the Tachira river border with Venezuela, in Villa del Rosario village, Colombia, August 25, 2015. (Photo by Jose Miguel Gomez/Reuters)

Colombian policemen stand guard at the Simon Bolivar border bridge with Venezuela, near Villa del Rosario village, Colombia, August 25, 2015. (Photo by Jose Miguel Gomez/Reuters)

A Colombian woman cries after being deported from Venezuela, as she arrives with her family at the Simon Bolivar bridge border, near Villa del Rosario village, Colombia, August 25, 2015. (Photo by Jose Miguel Gomez/Reuters)