 Although the government has the power to revoke Brazilian nationality of those who voluntarily naturalized in another country and did not satisfy one of the exceptions, it tends to apply these exceptions very broadly, and in practice it only revokes Brazilian nationality if the person formally requests so, or very rarely in exceptional circumstances.For example, in 2013 the Brazilian government revoked the nationality of a Brazilian citizen who had naturalized in the United States, to extradite her to that country (the Brazilian constitution does not allow extradition of its own citizens).The decision was confirmed by the Supreme Federal Court in 2017, and she was extradited in 2018.