You may check CBP web site for detail.
9+VF<;Xw FLbZ
9pX} http://www.cbp.gov oI$V|D3 9 }MZan" cfo The following is mentioned in U.S. Customs and Border Protection Declaration Form
EVz9WY HYIRcY Money And Other Monetary
Y?!/>q Instruments
]Y5dl;xrM) You may bring into or take out of the country, including
-uR{X G. D by mail, as much money as you wish. However, if
{CP o<lz it is more than $10,000, you will need to report it to
)1z4q` CBP. Ask the CBP officer for the Currency Reporting
#eEvF Form (FinCen 105). The penalties for non-compliance
Ru7L>(Njs can be severe.
9".Uc8^p/F “Money” means monetary instruments and includes U.S.
Uz>Yn&{y6 or foreign coins currently in circulation, currency, travelers’
HTNA])G checks in any form, money orders, and negotiable
"Z9^} instruments or investment securities in bearer form.