The Military Can't Build Trump's Border Wall. Here's Why He Keeps Insisting It Can

They couldn’t quite get him to understand it.

Just because Congress passed a spending bill doesn’t mean President Donald Trump could now treat the pile of taxpayers’ cash as a general fund to spend as he pleased on a huge and costly wall along the U.S.-Mexican border, aides explained to the President. Contrary to Trump’s experience as a real estate and marketing executive, this is not how the federal budget process works.