If you know the 'hint' is 50% likely to be true, and the 'hint' is specific enough to check this person at this time, in this place, and the 'hint' provider and

If you know the 'hint' is 50% likely to be true, and the 'hint' is specific enough to check this person at this time, in this place, and the 'hint' provider and the 'hint' acceptor are all working for the same government and are aware of this fact... then how does this differ from the government just using whatever means it wants to collect whatever evidence it wants and pretending that it didnt?