Frank Rich's Op-Ed in the New York Times is pretty damn spot on in my humble opinion:

TO paraphrase Al Pacino in “Godfather III,” just when we thought we were out, the Bush mob keeps pulling us back in. And will keep doing so. No matter how hard President Obama tries to turn the page on the previous administration, he can’t. Until there is true transparency and true accountability, revelations of that unresolved eight-year nightmare will keep raining down drip by drip, disrupting the new administration’s high ambitions.

That’s why the president’s flip-flop on the release of detainee abuse photos — whatever his motivation — is a fool’s errand. The pictures will eventually emerge anyway, either because of leaks (if they haven’t started already) or because the federal appeals court decision upholding their release remains in force. And here’s a bet: These images will not prove the most shocking evidence of Bush administration sins still to come.

There are many dots yet to be connected, and not just on torture. This Sunday, GQ magazine is posting on its Web site an article adding new details to the ample dossier on how Donald Rumsfeld’s corrupt and incompetent Defense Department cost American lives and compromised national security. The piece is not the work of a partisan but the Texan journalist Robert Draper, author of “Dead Certain,” the 2007 Bush biography that had the blessing (and cooperation) of the former president and his top brass. It draws on interviews with more than a dozen high-level Bush loyalists.

Draper reports that Rumsfeld’s monomaniacal determination to protect his Pentagon turf led him to hobble and antagonize America’s most willing allies in Iraq, Britain and Australia, and even to undermine his own soldiers. But Draper’s biggest find is a collection of daily cover sheets that Rumsfeld approved for the Secretary of Defense Worldwide Intelligence Update, a highly classified digest prepared for a tiny audience, including the president, and often delivered by hand to the White House by the defense secretary himself. These cover sheets greeted Bush each day with triumphal color photos of the war headlined by biblical quotations. GQ is posting 11 of them, and they are seriously creepy.

[...]

It will soon be every man for himself. “Did President Bush know everything you knew?” Bob Schieffer asked Cheney on “Face the Nation” last Sunday. The former vice president’s uncharacteristically stumbling and qualified answer — “I certainly, yeah, have every reason to believe he knew...” — suggests that the Bush White House’s once-united front is starting to crack under pressure.

I’m not a fan of Washington’s blue-ribbon commissions, where political compromises can trump the truth. But the 9/11 investigation did illuminate how, a month after Bush received an intelligence brief titled “Bin Laden Determined to Strike in U.S.,” 3,000 Americans were slaughtered on his and Cheney’s watch. If the Obama administration really wants to move on from the dark Bush era, it will need a new commission, backed up by serious law enforcement, to shed light on where every body is buried.

If you have time I definitely recommend reading the entire article.  I do not know why Obama is tiptoeing around Bush's illegality.  But I do know it must stop. And there must, must be prosecutions.