I'm Rainey Aronson, executive producer of the PBS investigative series Frontline, and you're

listening to the Frontline dispatch.

On this episode, in collaboration with Purize the World, we have a story from the migrant

caravan that dominated the news last fall.

It's a story about a boy from El Salvador who came up in the caravan,

trying to reach his mother.

Our reporter is Monica Campbell.

The Front Line Dispatch is made possible

by the Abrams Foundation

Journalism Initiative committed to excellence.

The Frontline Dispatch is made possible by the Abrams Foundation committed to excellence in journalism

and by the Frontline Journalism Fund with major support from John and Joanne Hagler.

Support for Frontline Dispatch comes from the Massachusetts General Hospital Cancer Center,

dedicated to providing compassionate care and cancer specialists who are experienced in the

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Learn more at mass general.org

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It's November.

It's November and I'm crossing the border into Tijuana. I'm looking for a kid I'd heard about from El Salvador, who came up in the migrant caravan.

He's 15 and alone and waiting for a chance to enter the US and ask for asylum.

There's a US helicopter overhead and Mexican soldiers and police around,

...