What is inhumane? This is a persons personal judgment. We need time to even establish whether these people are indeed the parents of the children. It is without doubt that children are being sent alone with extended family or just coyotes and cartel. We could be sending them away with human traffickers. What is inhumane is the dangers of crossing the border illegally. Cartels run whole cities within our borders where they traffic women and children, they traffic drugs and guns.
We need a revolving door at the border. They are caught. We establish who they are and if they are indeed a family we ship them back immediately to country of origin. That is what would be humane. While they are in detention they are fed, given medical care and clean clothes. They have clean beds. The unlucky ones are the ones who die in the back of semi's with their children.