Sat in courtroom of the judge who ordered their reunification with parents.
Now walking into the first congressional oversight hearing into the separations under the Democratic Congress.
Watch live: energycommerce.house.gov/committee-acti…
We heard *we just don't know* the total number of kids separated by Trump or whether or not they were ever reunited.
Chairwoman @RepDianaDeGette called the policy "abhorrent."
@DHSgov hasn't told them!
@OIGatHHS says could be "thousands" more than 2,800+ we know about.
That's why oversight is so critical.
@mitchellreports is right -- we must hear from @SecNielsen.