 When he started the enhanced process of family separation at the southern border, a policy that was original to George W. Bush. Why were they doing it? Because 30 percent of the girls who come across the border illegally get sexually assaulted. Migrants know their asylum cases have a higher percentage of being granted if, in fact, they have a child with them. So the reason family separation began under Bush is we just wanted to make sure these kids were traveling with people they were supposed to be traveling with.