NEW : It 's the first time the U.S. has offered such a reward , John Kerry says . NEW : In addition to the reward , U.S. wildlife officials destroyed six-ton of elephant ivory . Other nations including the Philippines , Kenya and Gabon have destroyed large quantities of ivory in recent years . NEW : The United States is the first -largest retail market for illegally acquired ivory , after U.S. . Profits from wildlife trafficking are $ 1 million a year .
NEW : It 's the first time the U.S. has offered such a reward , John Kerry says . NEW : In addition to the reward , U.S. wildlife officials destroyed six-ton of elephant ivory . NEW : The United States is the first -largest retail market for illegally acquired ivory , after U.S. . Profits from wildlife trafficking are $ 1 million a year .