You may check CBP web site for detail.
%d<uOCf\Q l+e L:C! http://www.cbp.gov zmV5k 5$kv,%ah The following is mentioned in U.S. Customs and Border Protection Declaration Form
1'qllkT 2b|$z"97jj Money And Other Monetary
F9DY\EI Instruments
t{\,vI You may bring into or take out of the country, including
{ZiZ$itf by mail, as much money as you wish. However, if
}cov"o it is more than $10,000, you will need to report it to
vYT%e:8)q CBP. Ask the CBP officer for the Currency Reporting
Nqih LUv Form (FinCen 105). The penalties for non-compliance
E'|
@hL-jn can be severe.
`~zY!sK “Money” means monetary instruments and includes U.S.
GfEg][f or foreign coins currently in circulation, currency, travelers’
@<$-*, checks in any form, money orders, and negotiable
86[/NTD<- instruments or investment securities in bearer form.