Those great battlers for what is legal, just and right, the august members of the High Court (U.S. Supreme Court) fight injustice and wrongdoing wherever they see it. Right? Right??
Have you ever heard of a "justice" ordering the government to cease and desist with these wars of aggression that the United States does?
After all, it was Justice Robert H. Jackson, a member of the Nuremburg panel that tried Nazis after World War Two, who said in opening arguments at Nuremburg: "The Geneva Protocol of 1924 for the Pacific Settlement of International Disputes, signed by the representatives of 48 governments, declared that 'a war of aggression constitutes . . . an international crime.'"
But, you say, the U.S. Supreme Court has no jurisdiction. Yes, it does. According to the government itself: "The Judiciary Act of 1789 gave the Supreme Court original jurisdiction to issue writs of mandamus (legal orders compelling government officials to act in accordance with the law)."
You can read more about how the Supreme Court can order the White House, and therefore the Department of Defense, and the Congress to not initiate illegal wars or stop illegal wars in progress:
http://www.uscourts.gov/about-federal-courts/educational-resources/about-educational-outreach/activity-resources/about I don't the think Supreme Court minds all these wars. In fact, I would be surprised if members of the court did not have stock with companies that manufacture weapons and war machines and that supply the troops.