The revocation program, plans for which were first reported by the AP in February, soon will be greatly expanded to cover parents who owe more than $2,500 in unpaid child support — the threshold set by a little-enforced 1996 law, the State Department said.



I think the logic is based on the SAVE Act: if it passes, you effectively need a passport to vote.
But it has not yet passed.
You need a passport to vote?
You seem to have misunderstood their comment.
I’ve added emphasis to make things clear.