You may check CBP web site for detail.
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e0#t http://www.cbp.gov 'tDUPm38 _''un3eCY The following is mentioned in U.S. Customs and Border Protection Declaration Form
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\ Money And Other Monetary
&po!X ) Instruments
EqGpo_ You may bring into or take out of the country, including
~ivOSr7s} by mail, as much money as you wish. However, if
gX7R-&[UD it is more than $10,000, you will need to report it to
IT)3Et@Y CBP. Ask the CBP officer for the Currency Reporting
,p#r; O<O Form (FinCen 105). The penalties for non-compliance
o@7U4#E can be severe.
.wmqaLd% “Money” means monetary instruments and includes U.S.
!Qf*d;wxn( or foreign coins currently in circulation, currency, travelers’
i"=lxqWeaV checks in any form, money orders, and negotiable
dWY{x47 instruments or investment securities in bearer form.