In a way, we have one: it's called the Patriot Act and a lot of it needs to be repealed.
Treason against the United States, shall consist only in levying War against them, or in adhering to their Enemies, giving them Aid and Comfort.
No member of the Bush regime is guilty of treason. Treason is the only crime defined in the Constitution
(Article 3, Section 3) and what these people have done does not fit that definition.
Many members of the Bush regime can be charged with war crimes and crimes against humanity. This includes Mr. Bush, Mr. Cheney, three of the four current top cabinet officers and a number of their aides. The invasion of Iraq was a war crime on its face. It was an unnecessary war of aggression without cause or provocation and without proper authorization from the UN Security Council. The reasons given for the war were false. When Bush, Cheney, Rice, Rumsfeld, Wolfowitz, Perle, Libby and General Powell said they had proof that Saddam had biochemical weapons, a "reconstituted" nuclear program or intimate ties to international terrorism, they were lying. What intelligence they had was inconclusive at best. We know from the memoranda leaked from the British government that members of the regime, including Mr. Bush, were aware that the case against Saddam was "weak", yet they continued to present the case in public and before Congress as being certain. They were manipulating the intelligence behind the scenes. Mr. Cheney and Mr. Libby made frequent trips to Langley to pressure intelligence analysts to say what they wanted to hear. In the Pentagon, the Office of Special Plans under Douglas Feith cherry picked intelligence reports that were favorable to the case for war and edited the ambiguity out of others. Intelligence reports refuting the case for war were suppressed. Those who lied or manipulated intelligence should be prosecuted.
In addition, many international treaties have been disregarded. The Fourth Geneva Convention prohibits an occupying country to rewrite the laws of occupied territory, yet Paul Bremer decreed changes in Iraq's laws on foreign investment. That is a war crime. Persons detained suspected of being terrorists have been held incommunicado and denied prisoner of war status, even initially. That is a violation of the Third Geneva Convention, and a war crime. Some of those held in the custody of the United States have been threatened with a judicial proceeding that may result in a death sentence, yet the rules of such proceedings are such as to deny the accused due process of law. This is a violation of the Third and Fourth Geneva Conventions and a war crime. Many who are held in custody of the United States have been subjected to torture or cruel or humiliating treatments and punishments. This is a violation of the Third and Fourth Geneva Conventions and the Convention against Torture and Other Cruel, Inhuman or Degrading Treatment or Punishment. It is a crime against humanity and a violation of federal law. This use of torture was justified beforehand in legal papers prepared for Mr. Bush by then-White House Council and now-Attorney General Alberto Gonzales with the assistance of others, including John Yoo, now a professor of law at the Hastings Law School, University of California at San Francisco, and Jay Bybee, now a federal judge. The legal reasoning, based on the argument that the President is above the law, is so spurious as not to be serious. It is a crime against humanity.
Those named in the above paragraphs and others should be charged under the appropriate federal statutes and sent to prison for the rest of their natural lives. If the federal government is unwilling or unable to make a good faith effort in prosecuting members of the Bush regime for war crimes and crimes against humanity, then an international tribunal should be established for this purpose.