Ralph DeSio, of U.S. Customs and Border Protection, told KPBS the prototypes "were not and cannot be designed to be indestructible," but he said they were meant to "impede or deny efforts to scale, breach or dig under such a barrier, giving agents time to respond."
The president said Tuesday in an address from the Oval Office that a wall along the U.S.-Mexico border is “absolutely critical to border security.” His demand for $5.7 billion to fund construction of the wall led to a partial government shutdown Dec. 22 that remained ongoing Thursday.
“(A border wall is) what our professionals at the border want and need,” Trump said. “This is just common sense.”
The president was scheduled to visit the border in Texas on Thursday.
Watch - President Trump Addresses the Nation, Democrats Follow With Their Response