This 15 February 2020 video says about itself:
What is the impact of Trump’s border wall? | DW News
US Defense Secretary Mark Esper has justified diverting nearly 4 Billion dollars from … other programs to fund a border wall with Mexico. President Donald Trump says around 200 kilometers of the border fence have been finished. The president ignored criticism of the shift in funds, and talked instead about how much was being built, as well as making claims about people trying and failing to climb it. DW’s Cai Nebe and Luisa von Richthofen delivered this report from Arizona, where construction is in full swing, cutting through conservation areas and heritage sites. So what impact is the wall having on the communities and environment it cuts through?
See also here.