The federal government has started work on a border wall in California to replace a decaying decades-old barrier.
The administration is seeking $18 billion to extend the wall. Efforts to pay for it as part of a broader immigration package failed in the Senate last week.
In November, SWF Constructors of Omaha, Nebraska, won a contract for $18 million to replace wall in Calexico. The administration waived environmental reviews in September.