While he's still waiting for Mexico to agree to pay for his "big, beautiful" border wall, President Donald Trump is asking for $1.6 billion for, as Office of Management and Budget Director Mick Mulvaney put it, the barrier's "bricks and mortar." An unnamed source told CNN that the money requested in the newly released 2018 budget proposal would cover just a few dozen miles of wall. The proposed wall spending represents a significant portion of the more than $4.5 billion the White House is requesting for immigration enforcement and a border protection package whose wish list ranges from communications equipment and surveillance technology to aircraft and weapons.