The Ninth Circuit Court of Appeals has interposed a stay, thereby temporarily nullifying a lower court's injunction compelling the Trump administration to retrocede command of the California National Guard to the state, subsequent to their activation in response to demonstrations precipitated by immigration enforcement operations in Los Angeles; this appellate intervention arrives after District Judge Charles Breyer's finding that said deployment constituted an unlawful federal intrusion, contravening the Tenth Amendment's enshrined principles of federalism and exceeding the President's circumscribed statutory prerogatives, a prior judgement lauded by Governor Gavin Newsom but decried by the White House as an "unprecedented" and "abusive" overreach, the injunction's ambit extending solely to the National Guard and conspicuously excluding the concurrently deployed Marine Corps contingent, Newsom's initial legal challenge asserting that the Guard's presence, authorized under the Title 10 framework permitting presidential federalization of the National Guard under exigent circumstances, would exacerbate tensions and foment civil disorder.