FILE - In this June 13, 2013, file photo, hands from Daniel Zambrano of Tijuana, Mexico, hold on to the bars that make up the border wall separating the U.S. and Mexico as the border meets the Pacific Ocean in San Diego. One potential bidder on President Donald Trump's border wall with Mexico wanted to know if the government would help if its workers came under "hostile attack." With bids due Tuesday, April 4, 2017, on the first design contracts, companies are preparing for the worst if they get the potentially lucrative but controversial job. (AP Photo/Gregory Bull, File)
Featured Photo Galleries
