The scenario is: you’ve managed to receive ₩500,000,000 (~$337,265) at a Korean lottery (the catch is, only given in cash) which is delivered to you in two duffel bags. However will there be issues when returning back to the USA with that amount of money since it’s bundles of cash via foreign currency when the cap is $10,000 for undeclared amounts?
With that kind of money, why even come back? Definitely don’t bring it in cash, you get stopped by the cops and they are legally allowed to rob you. Then you’ll spend years fighting in court to get back whatever they haven’t spent.