The proposed rule would ban the sale of ivory from African elephants.
The New York City event is meant to discourage ivory traffickers.
Sens. David Vitter (R-La.) and Kirsten Gillibrand (D-N.Y.) warned of the "unintended consequences"...
They say an exemption to the ban on African elephant ivory doesn't go far enough.
The White House says the move will help prevent poaching threatening elephants.
Antique firearms, instruments and antiques made of ivory cannot currently be sold or traded.
The United States is the second largest market for ivory, behind China.
A Chinese man will serve 70 months for smuggling $4.5 million of rhino horn out of the U.S.
The music industry is concerned about a “crippling” new reg from the Obama administration.