The lawsuit, known as Mullin v. Friends of the Ruidosa Church, focuses on Section 102 of the 1996 IIRIRA. That provision grants the Homeland Security secretary wide power to erect barriers and bypass certain legal hurdles to accelerate such efforts. Challengers argue that this authority threatens protected environmental zones.
Justice Ketanji Brown Jackson dissented from the emergency move, highlighting divisions on the bench. The ruling provides only short-term relief and does not settle the larger questions surrounding executive authority or environmental protections, which will continue to be litigated.