I posted this in the comments below and thought some might miss it. Here's a little war powers hypo:
President Bush orders troops into Mexico to conduct targeted attacks on "centers of drug trafficking." Bush claims illegal drugs present a threat to national security. He reminds the American people that we still haven’t won the war on "drugs." Corporal O'Reilly refuses to go and is charged with desertion. O'Reilly claims the war is illegal. Mexico responds by invading New Mexico. President Bush orders the military to arrest all Mexican Americans in California and Texas and send them to Guantanamo. The ACLU sues on behalf of thousands of Mexican Americans detained without any due process or right to counsel. The parents of a Mexican American detainee also sue. How would the Court handle all of these issues?