United States President Barack Obama’s ex-enforcer Rahm Emanuel was crowned mayor of Chicago on Tuesday.

An Illinois state appeals court on Monday threw the Chicago mayor’s race into turmoil by ruling Rahm Emanuel did not qualify for the February ballot.

Barack Obama’s senior aide, a profane "piledriver", looks likely to quit so he can seek to become mayor of Chicago.

Rahm Emanuel, President Barack Obama’s famously fierce and foul-mouthed chief of staff, has a sudden opportunity to run for a job back home.