In spite of there having been elections in Iraq, the government leaders behave (and are expected by most Iraqis that they will behave) like U.S. Dimorats - all politics all the time.
Until someone in Iraq steps forward as, and can build a national following as, an Iraqi first and a Shia, Sunni or Kurd second, that will not change.
If any nation needs true Federalism (in the manner our founders intended) more than the U.S., it is Iraq.