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?
I don’t really understand the question.
Yes you “can” bring it all in cash, but what will happen is another question.
Like someone else said you’ll pay tax on it. That being the case you’re probably better off trying to deposit it at a bank and transferring it
One possibility is your money gets charged with a crime and is impounded.