AdvertisementOut Of Clout: Some States Brace For Washington Power OutageApril 22, 2014Alan GreenblattfacebookEmailRep. John Dingell, D-Mich., the longest-serving member of Congress, is celebrated by colleagues, including Vice President Biden, on Capitol Hill in June 2013. A former chairman of the Energy and Commerce Committee, Dingell, now 87, announced in February that he will retire after this term. (AP)