"It's very difficult," Pastor Héctor Silva said, his voice cracking.
"To stand in the doorway and see a mother with a child and say, 'I'm sorry. I can't help you.'"
This is the situation that is experienced daily in Reynosa, Tamaulipas —in northeastern Mexico—, where thousands of undocumented migrants arrive every week seeking to cross into the US Rosa Flores has the following report.