White House plan to help pay for border wall is a long shot | WTOP "But they could create bad political optics for the struggling Trump White House, since the administration asked earlier for $3 billion to pay for the Trump’s controversial U.S.-Mexico border wall and other immigration enforcement plans. During the campaign, Trump promised Mexico would pay for the wall." “The administration is asking the American taxpayer to cover the cost of a wall — unneeded, ineffective, absurdly expensive — that Mexico was supposed to pay for, and he is cutting programs vital to the middle class to get that done,” said Senate Democratic Leader Charles Schumer of New York. “Build the wall or repair or build a bridge or tunnel or road in your community? What’s the choice?" Another losing proposition.