Mike Bloomberg's gun control organization, Everytown for Gun Safety, says it's spending seven figures to launch a TV and digital ad campaign to pass what it calls “live-saving” background check ...

Mayors Against Illegal Guns releases report that exposes loopholes in gun purchases Mayor Bloomberg announced the findings of an investigation aimed at exposing loopholes in federal and state gun laws ...

Mayor Michael Bloomberg is calling for stricter rules for online gun sales after an investigation by his office found that background checks aren't done in a majority of Internet firearm transactions.