So your argument depends on the public statements of the president and secretary of state being lies.
Bizarre and unbelievable.
Your inability to comprehend plain English and your lack of logic are hard to believe.
They don't have evidence that the Pakistani President is corrupt. (I believe them, understand?)
That does not mean they trusted him implicitly and sufficiently in the case of OBL.
That does not mean they trust everybody that he may have told and everybody that they may have told.
That does not mean the risk was not unacceptable to them.
Legal or not is inconclusive simply based on these statements.
Without examining all of the data that the US has on Pakistan and all of the relevant historical realities and examples of corruption, collusion, and incompetence, it would be premature, presumptuous, and idiotic to make a conclusive finding.
You seem to be the only person who is so perplexed and astounded that the US could not trust Pakistan.
Even the radical idiots who despise everything about the US are logical enough to know that the US has legitimate reasons.
AQ, the Taliban, and OBL likely knew better than most that the US had strong reasons.
I have no doubt that a jury of 12 fujis would not find their reasons to be strong and the risks to be unacceptable.
Without a trial where the US is motivated to make their best case with no regard for US/Pakistani relations, we will never know what 12 rational people would have decided given all of the information.