You may check CBP web site for detail.
Q!K`e )R ;+
G9- http://www.cbp.gov vXb: Te;gVG * The following is mentioned in U.S. Customs and Border Protection Declaration Form
NgHpIonC ,<sm,!^<r Money And Other Monetary
p'&*r2_ram Instruments
" \:ced You may bring into or take out of the country, including
eZNitGaU by mail, as much money as you wish. However, if
*xcP` it is more than $10,000, you will need to report it to
@;m$ua*|: CBP. Ask the CBP officer for the Currency Reporting
|1"!k
A Form (FinCen 105). The penalties for non-compliance
\OcMiuw can be severe.
W}h|K:-S “Money” means monetary instruments and includes U.S.
hY+R'9 or foreign coins currently in circulation, currency, travelers’
_S"f_W checks in any form, money orders, and negotiable
O-j$vzHpdY instruments or investment securities in bearer form.