President Bush will never be charged with war crimes as he is too powerful and beyond justice as you say. I am afraid that charging people with war crimes is used almost exclusively against the losers in a conflict never the winners. The Nazis were rightly charged and dealt with after the 2nd World War but you would have to be pretty naive to imagine that no war crimes were committed by the allies.
It is highly unlikely that George Bush will ever be charged with war crimes and brought before a war crimes tribunal in the Hague. This is mainly because it would be very difficult to provide enough evidence in order to demonstrate that the US president was directly involved in a deliberate violation of the laws of war. Although some things that occurred in Iraq following the US led occupation, such as the abuses at the Abu Ghraib prison, may implicate some US soldiers and generals, it would be impossible to prove that knowledge of these violations made it all the way to the president and that he sanctioned these actions in any way.
It should also be noted that the invasion of Iraq--even though nearly everyone now agrees that there were no weapons of mass destruction to be found--was not, in itself, a war crime. While Bush and his administration should rightly be held responsible for advocating an unnecessary war based on false evidence, there is really nothing here that would suggest that the US president was personally guilty of war crimes.
