You may check CBP web site for detail.
EV@yJ] aC94g7)` http://www.cbp.gov C#n.hgo>I ipyc(u6Z5 The following is mentioned in U.S. Customs and Border Protection Declaration Form
'| p"HbJ EY^?@D_< Money And Other Monetary
@MP ;/o+ Instruments
%UlgG1?A You may bring into or take out of the country, including
o.(Gja4 by mail, as much money as you wish. However, if
{q! :t0X.Y it is more than $10,000, you will need to report it to
CbwQbJ/v7 CBP. Ask the CBP officer for the Currency Reporting
tyFsnck Form (FinCen 105). The penalties for non-compliance
HCT+.n6 can be severe.
nK}-^Ur “Money” means monetary instruments and includes U.S.
c#-*]6x or foreign coins currently in circulation, currency, travelers’
.uSVZqJ7 checks in any form, money orders, and negotiable
t;V^OGflv instruments or investment securities in bearer form.