SAN DIEGO — A court-appointed committee has yet to find the parents of 628 children separated at the border early in the Trump administration, according to a court filing Wednesday that also said the government last week provided additional phone numbers to aid the long-running search. Parents of 333 children are believed to be in the United States, while parents of the other 295 are believed to be outside the U.S. That doesn’t necessarily mean the parents and children are still separated, only that the committee has been unable to locate the parents.