system
A chat on subreddit /r/wallstreetbets
human
Wait $600? Haven't traveled with cash in awhile but last I checked they won't even blink unless it's &gt; $10,000. Has that changed?
gpt
$10,000 is the threshold for having to fill out paperwork.  But civil asset forfeiture can happen at any level.  $600 is the reporting threshold for electronic payments through things like paypal where you then have to explain to the IRS why this isn't taxable income.