U.S. officials warn that cartel-operated drones on the border pose a major threat. Mexican officials are less certain. Analysts say the answer is likely in between. By Jack Nicas and Paulina Villegas ...

Construction is scheduled to begin within 60 days on a new stretch of steel-bollard border wall through the grasslands of the San Rafael Valley, a U.S. Customs and Border Protection spokesman ...

The first sections of the Trump administration’s steel-bollard border wall have been erected in the San Rafael Valley, where advocates say the planned barrier will seal off a critical wildlife ...