You may check CBP web site for detail.
+4
]31d&3 w9Z,3J6r http://www.cbp.gov Lx#CFrLQ* (+lCh7. The following is mentioned in U.S. Customs and Border Protection Declaration Form
"ukiuCfVuW LOX} Money And Other Monetary
nkii0YB! Instruments
3yp?|>e You may bring into or take out of the country, including
CE;J`; by mail, as much money as you wish. However, if
,ctm;T1H+ it is more than $10,000, you will need to report it to
O|I)HpG; CBP. Ask the CBP officer for the Currency Reporting
5KI lU78 Form (FinCen 105). The penalties for non-compliance
ZxvBo4>tH can be severe.
rIJv(&l “Money” means monetary instruments and includes U.S.
lPO+dm or foreign coins currently in circulation, currency, travelers’
^DH*\ee checks in any form, money orders, and negotiable
|fhYf
t instruments or investment securities in bearer form.