According to the article you posted, the veto thread is over a threatened investigation of the now more or less debunked "Koran flushing," and other allegations at Gitmo, not over the Abu Garib incident.
This is not the first time you've mixed the two camps up.
You do realize that Gitmo is in Cuba and Abu Garib is in Iraq, don't you? And you do realize that Cuba and Iraq are two completely different countries, on two completely different continents (in fact, one is an island)? And that they are separated by an entire ocean and several other land masses, don't you?