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U.S. Secretary of Labor Hilda Solis smiles as she hears the engine of a 2013 Boss 302 Mustang at the Flat Rock Assembly in Flat Rock, Mich., Monday, Sept. 10, 2012. The plant, formerly known as AutoAlliance International will continue to produce the Mustang and add the Fusion next year. Flat Rock Assembly will be the U.S. producer of the Fusion, employing 2,900 workers on both vehicle lines. (AP Photo/Carlos Osorio)

Labor Secretary Hilda Solis resigns

Labor Secretary Hilda Solis resigned Jan. 9 from her position in the

Obama administration. Solis, a former California congresswoman, has

served in her position since her February 2009 confirmation.