Despite US President Donald Trump’s pledge to curb illegal immigration, more than thousand persons are travelling in a caravan through Mexico to enter the United States illegally

Many remain determined to reach the U.S. through more dangerous means, riding freight trains, hiring smugglers and dodging authorities.

Naser Zazai, 29, had planned to reunite with his mother and brother in the United States this week after fleeing Afghanistan, where he says he was threatened and attacked because his brother had once worked for the U.