Narcotics trafficking, violence, poverty leading migrant caravans to US?

Why does the migrant caravan exist? And how did it come to be?

On Oct. 19, thousands of Central American migrants tried to cross the bridge between Guatemala and Mexico, seeking safety up north. News outlets broadcast the painful moans of people being crushed one against the other and the screams of children. We saw the desperate looks of mothers as authorities in Mexico tried to push back the crowd with batons and pepper spray. The following day they were permitted to cross over.

The caravan of 7,000, mostly from Guatemala and Honduras, is heading for the United States.

Once news of the caravan was presented to U.S. President