You may check CBP web site for detail.
JA .J~3 H}TzNs http://www.cbp.gov KW&5&~)2 ^zdZ"\x The following is mentioned in U.S. Customs and Border Protection Declaration Form
fU@{!;|Pz tS1(.CRk Money And Other Monetary
gQXB=ywF Instruments
$9_yD&& You may bring into or take out of the country, including
9NX/OctFa' by mail, as much money as you wish. However, if
XYeuYLut it is more than $10,000, you will need to report it to
h/T^+U?-< CBP. Ask the CBP officer for the Currency Reporting
pq<302uBQ Form (FinCen 105). The penalties for non-compliance
@qC](5|TQ can be severe.
#d
cf Q “Money” means monetary instruments and includes U.S.
y _Mte or foreign coins currently in circulation, currency, travelers’
+mc0:e{WF checks in any form, money orders, and negotiable
xW`,@a} instruments or investment securities in bearer form.