The four Duarte children were getting ready for school when their parents were arrested and taken into custody by US Border Control.

The eldest, 19-year-old Francisco Junior, was left in charge of his 12-year-old twin sisters and teenage brother.

The children - American citizens - never thought it would come to this.

Filmed & edited by Thomas Hass; additional editing by Joshua Hollis.

Watch BBC Panorama: Trump's Fortress America on Monday 17 July at 20:30 BST and afterwards on BBC iPlayer.