A new health crusade for New York City Mayor Mike Bloomberg

A new health crusade for New York City Mayor Mike Bloomberg
FILE - In this Sept. 13, 2012 file photo, New York City Mayor Michael Bloomberg speaks at a news conference in New York. (AP Photo/Seth Wenig, File)

The city that has already taken on smoking, trans fat, salt and soda is now after earphones, specifically ear buds popular with iPod users.

ABC's Aaron Katersky joined us....