U.S. Rep. Mark Kirk snagged a high-profile endorsement from New York Mayor Michael Bloomberg while announcing his push for gun-control legislation Monday. "He is a big boost," Kirk said following the afternoon news conference in Northbrook. Kirk is sponsoring legislation to close a so-called loophole that allows gun dealers to sell weapons without the required background checks if their distribution licenses are revoked. The measure is one of several that... (GunPolicy.org)