Every nation has a counter-intelligence dossiers ready to be used in court, some light spying might be tolerated because every nations spies on each other. But

Every nation has a counter-intelligence dossiers ready to be used in court, some light spying might be tolerated because every nations spies on each other. But when the situation needs it they can grab the known spies as a trump card. This whole Meng situation has shown that rule of law is really flexible and that US lawfare reaches far and deep.