William "Mo" Cowan, left, embraces Massachusetts Gov. Deval Patrick during a news conference at the Statehouse in Boston, Wednesday, Jan. 30, 2013, where he was named interim U.S. Senat

 

              William "Mo" Cowan, left, embraces Massachusetts Gov. Deval Patrick during a news conference at the Statehouse in Boston, Wednesday, Jan. 30, 2013, where he was named interim U.S. Senat
William "Mo" Cowan, left, embraces Massachusetts Gov. Deval Patrick during a news conference at the Statehouse in Boston, Wednesday, Jan. 30, 2013, where he was named interim U.S. Senator for the seat vacated with the resignation of Sen. John Kerry, D-Mass., who will become secretary of state. (AP Photo/Charles Krupa)