Thanks, Dog! Saw this on Fox. If we have their pictures, they were either on a watch list (ignored apparently by the Canadians and our INS) OR they were being watched and slipped over the border without going through a checkpoint (MILES of unwatched Canadian border..easy to do on Christmas Eve).
I think the fact that they haven't released where they came over indicates that we don't know...meaning they slipped over in unmonitored areas.