Here is a paste from fish and wildlife. The US is different to the UK, regarding the date of when the ivory needed to be in the USA.
I am thinking that you are just better off not to mention that it has ivory in the cue.
But as I understand it, if you have a cities permit for the ivory used , it should not be confiscated.It is the Illegal ivory that they have a problem with.They are mainly looking for things like ivory balls etc from animals killed just for the ivory, and is not legally obtained.
Anyone planning to import any ivory or
ivory products into the United States
should contact the Service’s Offi ce of
Law Enforcement prior to importation.3
Additionally, anyone considering selling
or trading ivory within the United
States should contact the Offi ce of Law
Enforcement, as well as his or her State
wildlife agency. As more countries
implement similar outreach programs,
we hope that the demand for ivory will
drop, resulting in a decrease or end to
elephant poaching and an increase in
the populations of these ancient and
magnifi cent animals.
3
lawenforcement@fws.gov
U.S. Fish & Wildlife Service
International Affairs
Division of Management Authority
4401 N. Fairfax Drive, Room 212
Arlington, VA 22203
703-358-2104 or 800-358-2401
703-358-2115/fax
mamagementauthority@fws.gov
http://www.fws.gov/international
http://www.fws.gov
January 2008
USFWS