W Bush - Charge: War Crimes.
When W. Bush attacked and invaded Iraq without securing a new war resolution as required, from the United Nations Security Council [a signed Treaty], his invasion, occupation, and everything that followed became a War of Aggression, totally illegal and immoral from the very first day.
"No one is above the law" - Barack Obama. Source"No one is above the law" - Eric Holder. Source
If certain acts of violations of treaties are crimes, they are crimes whether the United States does them or whether Germany does them, and we are not prepared to lay down a rule of criminal conduct against others which we would not be willing to have invoked against us - Robert H Jackson.
W Bush remaining above the reach of law in a nation of laws on Obama's watch has become an open ended obstruction of justice.