Passage: Elaine Lan Chao (Chinese: 趙小蘭; pinyin: Zhào Xiǎolán; born March 26, 1953) is the United States Secretary of Transportation who assumed her office on January 31, 2017. A member of the Republican Party, Chao was previously Secretary of Labor under President George W. Bush from 2001 to 2009.

Question: Elaine Lan Chao works for which state department?
Transportation