You better take the issue of ivory very seriously and moving a cue into or out of the U.S. is frought with risks. There are some on the Forum that will write and say I'm exaggerating about the risks.....hardly the case......but do your own research......check the website from the American Cuemakers Association.....you get caught, and you're out a cue or money or both......get caught more than once and you could be considered as a illegal trafficker according to some ambiguiites in US Customs Regulations.....and lastly, there can also be fines if you get some hardass enforcement agent handling your offense.......just not worth the effort or risk in my opinion but proceed as you will.....with due caution I might insert.
As an exercise, try buying some ivory right now....do some Internet searches........then look at what sellers have to post and explain, as well as the various limitations and restrictions imposed.....you can also visit
www.cuecomponents.com or
www.elephantivorytusks.com..........ivory is a dead serious issue when it comes shipping pool cues into or out of the United States.........just my humble opinion.