Standing on a high bank of the Rio Grande, Army Lt. Col. Ray Richards points to a stretch of river that was, until recently, one of the busiest spots for illegal border crossings from Mexico.
But on a recent afternoon, the area is quiet. American soldiers gather at a border monitoring post in Roma, Texas, where an infantry vehicle with camouflage netting sits between houses. A Blackhawk helicopter drops soldiers onto an island in the river, while U.S. Border Patrol agents breeze by on fan-propelled boats.