Whether to enforce or terminate provisions of a 28-year-old settlement that governs the treatment of unaccompanied migrant children in federal custody was, again, at the center of a legal dispute Friday as a chief judge in Los Angeles heard the arguments.

Attorneys for the migrant plaintiffs and various human rights organizations moved to enforce the policy, known as the “Flores settlement.” They claimed the government has been violating it after subjecting children to p…