You may check CBP web site for detail.
dBW4%Zh 4_4|2L3 http://www.cbp.gov &7c #i `oE.$~' The following is mentioned in U.S. Customs and Border Protection Declaration Form
F+V[`w*k <-Ax)zE Money And Other Monetary
Ba
n^wX Instruments
#Vm)wH3 You may bring into or take out of the country, including
YJwffV}nd by mail, as much money as you wish. However, if
]oC7{OoX it is more than $10,000, you will need to report it to
}5?|iUH| CBP. Ask the CBP officer for the Currency Reporting
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Form (FinCen 105). The penalties for non-compliance
wee5Nirw6 can be severe.
ck8Qs08 “Money” means monetary instruments and includes U.S.
o7AI or foreign coins currently in circulation, currency, travelers’
M/}i7oS] checks in any form, money orders, and negotiable
qmnW instruments or investment securities in bearer form.