That's why your head is up your ass.
You pointed at two nations that would only allow investigations of their leaders' wrong-doings in a very exceptional change of circumstances (as you, yourself, pointed out) and ignorantly tried to conflate the investigation of Trump with examples of unfettered government investigation into the lives of powerless citizens.
The truth is that cutting off the authorities from finding criminal acts committed by America's leaders would make America more like Russia and China and less like healthy democracies.
Check your very backwards thoughts, please, because your head is up your ass.