ACLU calls for former President Bush to be investigated: Divorced from morality or reality?

Huffington Post ran a copy of this letter that the ACLU wrote to attorney General Holder. They are calling for former President George W. Bush to be investigated and possibly prosecuted for crimes against humanity in ordering “waterboarding…” He apparently admits he authorised the “torture.” Was this immoral? Or is the ACLU divorced from the reality of terrorism and what a leader sometimes has to do to protect his people?
Here’s the letter written to Mr. Holder. What do you think should happen? Should we bring former president Bush up on charges? Or shake his hand and thank him for keeping us safe? Is the Pres divorced from morality? Or is the ACLU divorced from reality?

Dear Attorney General Holder:
The American Civil Liberties Union respectfully urges you to refer to Assistant U.S. Attorney John Durham the question of whether former president George W. Bush’s conduct related to the interrogation of detainees by the United States violated the anti-torture statute. See 18 U.S.C. § 2340A.
In his recently published memoirs, President Bush discusses his authorization of the waterboarding of Khalid Sheik Mohammed and Abu Zubaydah. He states, for example, that he “approved the use of the [enhanced] interrogation techniques,” including waterboarding, on Abu Zubaydah, and that he responded to a request to waterboard Khalid Sheik Mohammed by stating: “Damn right.” George W. Bush, Decision Points 169-70 (2010).
The Department of Justice has made clear that waterboarding is torture and, as such, a crime under the federal anti-torture statute. 18 U.S.C. § 2340A(c). The United States has historically prosecuted waterboarding as a crime. In light of the admission by the former President, and the legally correct determination by the Department of Justice that waterboarding is a crime, you should ensure that Mr. Durham’s current investigation into detainee interrogations encompasses the conduct and decisions of former President Bush.
The ACLU acknowledges the significance of this request, but it bears emphasis that the former President’s acknowledgement that he authorized torture is absolutely without parallel in American history. The admission cannot be ignored. In our system, no one is above the law or beyond its reach, not even a former president. That founding principle of our democracy would mean little if it were ignored with respect to those in whom the public most invests its trust. It would also be profoundly unfair for Mr. Durham to focus his inquiry on low-level officials charged with implementing official policy but to ignore the role of those who authorized or ordered the use of torture.
Failure to fully investigate the role of the former President in the use of torture would also severely compromise our ability to advocate for human rights in other countries. The United States has been a champion of that cause for over half a century. Recently, while in Indonesia, President Obama urged that country to acknowledge the human rights abuses of the Suharto regime. He stated unequivocally that “[w]e can’t go forward without looking backwards.” Without suggesting that our own experience is equivalent, it is clear that the United States’s authority to push for such accountability in other countries, and the willingness of those countries to follow our advice, would quickly unravel if we failed even to investigate abuses authorized by our own officials.
The ACLU understands the gravity of this matter and appreciates the difficulty of the Department of Justice’s task. A nation committed to the rule of law, however, cannot simply ignore evidence that its most senior leaders authorized torture.
Thank you for your attention to this matter. For your convenience, I am attaching the ACLU’s letter of March 17, 2009, in which we asked you to appoint an independent prosecutor to investigate crimes relating to the abuse of detainees.
Anthony D. Romero