U.S. Rep. Luis Gutierrez says he's not running for Chicago mayor.
The Chicago Democrat made the announcement Thursday. His name's been circulated as a possible contender to replace Mayor Richard Daley, who's not seeking a seventh term.
Among those preparing or mulling a run are former White House chief of staff Rahm Emanuel, Cook County Sheriff Tom Dart and former U.S. Sen. Carol Moseley Braun.
Gutierrez says his time is better spent working for immigration reform in Congress. He has been arrested for civil disobedience at the White House over opposition to Arizona's controversial immigration law. And he's a vocal supporter of the DREAM Act, which would grant U.S. residency to some immigrant youths brought into the country illegally by their parents.