Is There 100 Miles of New Border Wall, or Not? As for the confusion, here is an excerpt from CNN:Yet of the 100 miles, few are areas where there was previously no wall. "One thing I want to emphasize is that every inch of the 100 miles that we have constructed is new border wall system," he added. It is clear from those photographs that there were portions of the border wall that were downright decrepit. Rather, they serve as impediments to slow that traffic long enough for the Border Patrol to respond to incursions.