Scrap the hidden money packages, but it is true if someone who if fortunate enough is be able to carry a decent amount of cash, they are considered quilty unless they can win their money back. No charges but no money unless you pay lawyers to get it back and that could cost more than what you lost.
If they catch the drugs, they have to store it, wait for the case to end, and then destroy the drugs.
If they catch the money, they just deposit into their account.