SAN DIEGO — A federal judge on Friday applauded Trump administration efforts to meet a deadline to reunite more than 2,500 children with their families after they were separated at the border.

Justice Department attorneys said in federal court in San Diego that 450 children 5 and older had been reunified, up from 364 a day earlier.

‘‘I’m just very impressed with the effort that has been made,’’ US District Judge Dana Sabraw said.

Yet, hundreds of children are still awaiting reunions with their families. In a court filing Thursday, the administration said about 1,600 parents were believed to be eligible for reunification and about 900 were not eligible or ‘‘not yet known to be eligible.’’ Some of the latter cases are still under review.


It appeared unlikely that all the children would be reunified by the July 26 deadline. More than 200 parents have been released into the United States, and parents of an unknown number of children have been deported.