As a California court deadline came and went Tuesday for the Trump administration to reunite 102 undocumented immigrant children under the age of 5 with their parents, Sen. James Lankford came to the administration’s defense after it did not fully meet the court’s demands.

Dozens of the children are still at temporary housing facilities as the Justice and Health and Human Services Departments vet those who have claimed to be the children’s parents through DNA tests, criminal background checks, and other means.

Some people who have claimed parentage have been human traffickers, Lankford told MSNBC on Tuesday.

“The challenge is some of those individuals are not their parents,” Lankford said. “Some of those individuals were traffickers claiming to be their parents. So they’re doing DNA tests to be able to evaluate, ‘Are these really relatives?’”

Children who are not claimed by any verifiable parents or relatives will be placed in foster care.