
Physical barriers that have been erected in the past 10 years along select stretches of the United States’ border with Mexico have helped stem the flow of illegal activity, Department of Homeland Security (DHS) officials said on Tuesday ahead of a visit by President Donald Trump to the border in Arizona.In the Yuma, Ariz., sector of the border, which Trump was slated to visit, the U.S. went from five miles of fencing in 2005 to 63 miles a few years…