The United States does not permit civil lawsuits for “Acts of War”. Else people around the world would be suing the United States for being bombed and killed. Omar Khadr was found guilty of “Acts of Terror” in the wrongful-death default lawsuit launched by Tabitha Speer and Layne Morris. How does one person's action should be called lawful in a firefight and the other a terrorist is beyond me.

If the US government believes that Omar Khadr is a criminal, then why didn't put him on trial in the United States? Because Guantanamo Bay is in Cuba and therefore defendants are not subject to American laws and protections. It's a legal black hole. Omar Khadr was tortured into signing a confession and all evidence would have been tossed in a real trial.