Last year, an average of one migrant died each day trying to cross the desert into the United States.
She read that he had drowned trying to cross the border into the United States.
Most were recaptured, but some crossed the border into the United States and have never been tracked down.
Martha holds her passport in a line waiting to cross into the United States.
More visible are the migrants looking to cross the border illegally into the United States.
Foreigners who cross into the United States here are arrested.
Instead he waited in line to cross back over the bridge into the United States.
Congress has voted against letting the military shoot down suspected drug planes trying to cross into the United States.
He had illegally crossed the border into the United States two years before.
But without identification papers, he is afraid to cross the border into the United States to find out more about his background.