You may check CBP web site for detail.
.xuLvNyQr f7}/ {}g http://www.cbp.gov C ".&m l=[<gPE The following is mentioned in U.S. Customs and Border Protection Declaration Form
]L%qfy4 #[C|%uq Money And Other Monetary
0Np}O=> Instruments
|_8-3 You may bring into or take out of the country, including
0ejx;Mum by mail, as much money as you wish. However, if
UwrinkoeE it is more than $10,000, you will need to report it to
a1B_w#?8 CBP. Ask the CBP officer for the Currency Reporting
a= ;7 Form (FinCen 105). The penalties for non-compliance
B5aFt ;Vj can be severe.
FJgr=9> “Money” means monetary instruments and includes U.S.
#Na3eHT or foreign coins currently in circulation, currency, travelers’
MOY.$M,1 checks in any form, money orders, and negotiable
wX"
6 S: instruments or investment securities in bearer form.