He is replacing Gloria Macapagal Arroyo, whose nine-year rule saw failed power grabs and opposition impeachment bids against her because of allegations of vote-rigging, corruption and rights abuses.

VOA: standard.2010.06.30

The Byrd administration then sought to impeach the Judicial Appeals Tribunal, although most experts agreed that no judicial impeachment power exists in the Cherokee constitution.

ECONOMIST: The Cherokee nation

He left the country in 2008 under the shadow of impeachment after losing power in elections.

BBC: Profile: Pervez Musharraf

The House of Representatives has the sole power to initiate impeachment proceedings against the president.

BBC: Impeachment: The process explained