A right-wing militia group operating in southern New Mexico has begun stopping groups of migrant families and detaining them at gunpoint before handing them over to Border Patrol agents, raising tension over the tactics of armed vigilantes along the borde

Ursela Ojeda, a policy adviser in Washington for the Women’s Refugee Commission … called the actions of the militia “highly problematic.”

“These are families, and lots of young children, fleeing dangerous situations,” Ms. Ojeda said. “I have a hard time seeing how someone has a right to point a loaded weapon at these families.”