The Governor has a constitutional right to call up the citizen militia at any time. If the federal government won’t send the National Guard, he can call on the citizens to defend their own state from invasion.
The border guvs should immediately deputize any vet, ex-cop or holder of a carry license (for starters) and authorize them to own full autos. That’ll both solve the firepower disparity between the drug gangs and us plain folks and also cause hoplophobic heads around the nation to explode.