Originally Posted by
alanR
$10K or equivalent - like all the others answered
BUT why would anyone want to take Euro from the US?
If someone is trying to illegally move money (not declared), the Euro is a currency some are using to launder money because of the 500 EUR note. A 200 note also exists.
The 500 EUR note makes it much easier to illegally transport currencies between nations, including to/from the US. With the exchange rate, the notes are worth a bit over $700 USD as of today. Why carry 7 $100 USD notes when you can carry one 500 EUR note?
Hope no one minds the image - just including it for those unfamiliar with the look of Euro notes.