US lawmakers in Congress have listened to the testimony of a Guatemalan mother whose toddler died of a viral lung infection while in an immigration detention location in the United States.

Several formative years have already died while in custody at these detention centres.

Democrats who accuse the immigration officials of treating the migrant formative years poorly were visibly moved at her legend. Nonetheless one Republican representative defended their behaviour.

Al Jazeera’s John Hendren reports from Washington, DC.