In this article for the Washington Post, Judith S. Lewis discusses the findings from several studies on separated children in the UK after World War II in relation to the family separation of migrant families in the US today. "History suggests that family separation, particularly when children are separated from their primary caregivers, most often mothers, will cause enduring harm," writes Lewis. "The experience of World War II-era Britain shows that even when the conditions of separation were far more favorable than they are today, separating children from their parents was deeply traumatic. Anna Freud even concluded at the time that London children were 'less upset by bombing than by evacuation to the country as a protection against it.'"