You may check CBP web site for detail.
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D"?fn<2 http://www.cbp.gov 4
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|(5q? doy`C)xI The following is mentioned in U.S. Customs and Border Protection Declaration Form
lun\`f 5Q M`i\VG Money And Other Monetary
emPM4iG?! Instruments
sCk? You may bring into or take out of the country, including
iJ3e1w$ by mail, as much money as you wish. However, if
<\ :Yk it is more than $10,000, you will need to report it to
j; y#[| CBP. Ask the CBP officer for the Currency Reporting
!F1N~6f Form (FinCen 105). The penalties for non-compliance
L(-b@Joh can be severe.
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“Money” means monetary instruments and includes U.S.
q):5JXql~ or foreign coins currently in circulation, currency, travelers’
9-DZU,`P checks in any form, money orders, and negotiable
EYEnN instruments or investment securities in bearer form.