You may check CBP web site for detail.
Wl
dlN?[j =kp#v http://www.cbp.gov }TzMWdT -+Axa[,5= The following is mentioned in U.S. Customs and Border Protection Declaration Form
V:fz @i'RIL} Money And Other Monetary
=3]}87 Instruments
9.{u2a\ You may bring into or take out of the country, including
b^~ keQ by mail, as much money as you wish. However, if
}3E@]"<cVR it is more than $10,000, you will need to report it to
^
|z
|kc CBP. Ask the CBP officer for the Currency Reporting
1p
[C5j3 Form (FinCen 105). The penalties for non-compliance
!g
# can be severe.
ai)S:2 “Money” means monetary instruments and includes U.S.
aHNR0L3$}{ or foreign coins currently in circulation, currency, travelers’
6}6;%{p"Gu checks in any form, money orders, and negotiable
tSaLR90Y6 instruments or investment securities in bearer form.