WASHINGTON – President Donald Trump has recently advocated for a "steel slat" barrier along the U.S.-Mexico border after earlier pushing for a concrete wall to stop the flow of migrants.

President Donald Trump on Friday tweeted an image of what he said was a design of his administration's "Steel Slat Barrier" intended for the US-Mexico border, complete with metal spikes at the top.

I found some steel slats down on the border. But I don’t see anything resembling a national emergency situation.. at least not in the McAllen TX area of the border where Trump will be today.

However, testing by DHS in late 2017 showed all eight prototypes, including the steel slats, were vulnerable to breaching, according to an internal February 2018 U.S. Customs and Border Protection ...

But steel slats may not be the “impenetrable wall” Trump promised on the campaign trail in 2016. A report from NBC News said during a Department of Homeland Security test, ...

Trump Once Pushed for “Big, Beautiful Wall,” Now Tweets Crude Image of Steel Slats With Spikes. By Daniel Politi. Dec 22, 2018 8:31 AM.