Morality?
Laws are meant to punish wrong doers and protect the innocents! Sir salmond gave few reasons for necessity of justice and law, and one of the most significant among them was, man has no one reason in common and all have different reasons for pursuing their goals. Another, jurist, went one step ahead and said and said law must keep humans in awe, to push him not to commit any bad acts.
Laws are made to protect people from cruel's. Even, In islam, there is no immunity for anyone and as the whole constitution is based on islamic laws, then why this principle is ignored.
Aint it clear that immunity are for those, who are extremely dangerous for the society as whole! It reminds me of popular quote. All Power corrupts, and absolute power corrupts absolutely. Machiavelli, rightly said, having absolute power, one can do anything