I had thought this was already on the forum but apparently not. Where ever I did read it, the posters of that thread pointed out two things that struck me as significant.
1. The majority of (poached?) ivory is going to China, thus this law is a waste.
2. And far more important, is that, as the law is written, the authorities can confiscate suspect ivory and require the owner to prove that it is legal, effectively shifting the burden of proof onto the accused. Think about the implications of that one for awhile. Suppose they applied that logic to firearms? Can you imagine a police officer able to confiscate any gun you own and then require you to prove that it was legally obtained? Can you do that for every gun you own? Even with this law, would they let remove ivory grips from a gun or would the demand you forfeit the whole thing? Scary thoughts, aren't they?