WASHINGTON—By early summer this year, a trend became clear across the United States. Some opponents of Immigration and Customs Enforcement (ICE) and other immigration law enforcement were moving from words to violence.
The Sept. 24 sniper attack on an ICE facility in Dallas marked a grim milestone: It was the third such shooting this year in the Lone Star State. In separate incidents in July, attackers targeted a Border Patrol station in McAllen, Texas, and the Prairieland ICE Detention Facility in Alvarado, Texas.
