Construction begins on a $46 billion border wall plan

PBS NewsHour reports that construction has started on border wall work, which it calls an important milestone in the administration's $46 billion plan to line the border with walls, barriers, roads and technology. The network frames the build as an effort to make good on a key Trump campaign promise to finish the wall. What the report does not offer is any accounting of how much of the barrier is already complete or how the $46 billion is broken down across walls, roads and surveillance technology — the milestone as reported is the start of building, not the completion of it.