So what would we have--the feds fighting a war on behalf of Texas against Mexico on the Texas-Mexico border, but protecting Mexican drug businessmen shipping their wares across the California-Mexico border?
I dont think the US gov't would have to protect mexican drug businessmen. When was the last time Tequiza had to ask the US for help with its shipment. And no, it'd be the feds fighting a war against US soil. If one state is attacked with military, all are attacked.