Construction on Trump's wall has indeed begun
(From The Washington Examiner)
I checked in with agents at the Rio Grande Valley border sector to see if they knew what new "wall" Trump was talking about. They sent me information on construction for new border barrier announced last year. The project funds six miles-worth of concrete and steel barrier of the sort that agents told me in January is immensely successful in deterring illegal border crossings.
The wall will be supplemented by "detection technology, lighting, video surveillance, and an all-weather patrol road parallel" to the barrier, according to a release sent out by the CBP in November.