BBC Panorama joins a helicopter dawn patrol along the US border
BBC Panorama's Hilary Andersson joins a helicopter dawn patrol over the Rio Grande River, that forms the US border.
The president’s tough stance has created what they call here the "Trump effect".
Watch BBC Panorama: Trump's Fortress America on Monday 17 July on BBC One at 20:30 BST and afterwards on iPlayer.
17 Jul 2017
- From the section US & Canada