https://en.wikipedia.org/wiki/Three_Percenters
> Three Percenters have joined vigilante patrols along the U.S.–Mexico border
https://azmirror.com/2024/05/23/border-vigilantes-are-blurri...
> On Jan. 20, just three days after Cade’s aid camp visit near Sasabe, another group assembled on a ridge overlooking the Rio Grande in Texas and stood over five seated migrants. Some of those standing were armed with long guns or pistols and one wore tactical gear; they questioned the migrants, all young men or boys, while filming them.
But structurally, doing vigilante immigration enforcement is more difficult than doing vigilante destruction of property. Destroying a security camera takes one person doing one action one time; physically restraining a human being who doesn't want to be restrained and physically transporting them to the US border is a complex logistical operation that you really need the resources of a state-run bureaucracy in order to do. A vigilante group can't replicate it, unless it's so large and well-organized itself that it's a de-facto rival state to the legitimate US government, and this simply doesn't exist in the United States at this time.