Angered by unending waves of illegal immigration, some Americans have taken matters into their own hands by forming "Minuteman" patrols that they plan to expand from Arizona to Texas this fall. A Houston congressman is pushing for creation of militias of armed volunteers to augment Border Patrol forces. Gov. Rick Perry is mulling a border neighborhood watch-style program. And in recent days, the governors of Arizona and New Mexico – fed up with the failure of the federal government to control the border – have declared state emergencies in counties struggling with rising immigrant smuggling and violence. "It's a scream...