What makes you think it was altered by a non-government agent or agents? (Apart from the moron who added the green hash background, that is.)
Why is it so hard to believe that it was created by DOH in Hawaii?
To follow your theory, the "legal forgery" would have happened back when Obama was adopted in the 1960s. Copy/paste and Photoshop layers would not have been the tools that were used to create the new documents.
I do not believe that Hawaii would use modern desktop computer tools each time a document is requested by an adopted Hawaii citizen. They would create the new document at the time of the transaction, and the new document would be reentered into the system of record to produce any future documents in a standardized way.
The fact that Obama's documents are hand-crafted suggests that they were not produced by a certified agent of Hawaii.
If the documents were not produced by Hawaii, and then if Hawaii knows that they did not issue it and remain silent about it, then they are also complicit in the fraud. Hawaii cannot call the document genuine after the fact; they cannot give ex post facto certification in order to remain silent about the fraud.
-PJ