You may check CBP web site for detail.
&_L%wV|[ =TD`P et http://www.cbp.gov JmCMFqB9 Oc L7] b0 The following is mentioned in U.S. Customs and Border Protection Declaration Form
vH+g*A0S< gsL=_#
? Money And Other Monetary
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V
Instruments
:|;@FkQ You may bring into or take out of the country, including
w(@r-2D" by mail, as much money as you wish. However, if
rpKZ>S|7+) it is more than $10,000, you will need to report it to
>._d2.Q' CBP. Ask the CBP officer for the Currency Reporting
@` KYgjjH Form (FinCen 105). The penalties for non-compliance
n^nE&'[?0g can be severe.
HoPpUq5, “Money” means monetary instruments and includes U.S.
l@);U%\pS or foreign coins currently in circulation, currency, travelers’
B@F@,?K4% checks in any form, money orders, and negotiable
oz&`3` instruments or investment securities in bearer form.