Ivory merchant requires special import license.  Or salvage from old pianos.
The ultimate stupidity of those laws came a few years ago when a famous Canadian pianist was heading South to play a concert with the Houston Symphony.   She was taking her own historic grand piano for the concert, but the thing was stopped at the border because it had real ivory keys.   She had to have the keys stripped and replaced with plastic before the historic piano could enter the USA for the concert.   

The land of plastic replicas certainly has little tolerance for the real thing.   I guess Disney won the first round, but thanks to you folk, it apparently ain't over yet.

cp in absolute elsewhere