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 Mark Molesworth; 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.
Source: world bbc