There are too many differences between Barack Obama and Donald Trump to list them all. But a recent Trump controversy exemplifies how the two differ in their basic humanity.

On Tuesday, a chilling report in The New York Times showed just how far Trump is willing to go to secure the U.S.-Mexico border.

In a March meeting, Trump was fuming about undocumented immigrants crossing the border so he proposed some ideas that are so extreme they seemed to come from the Middle Ages.