sentences:  The name "Mexican Empire" was briefly revived from 1863 to 1867 by the conservative government that instituted a constitutional monarchy for a second time under Maximilian of Habsburg.On 22 November 2012, incumbent President Felipe Calderón sent to the Mexican Congress a piece of legislation to change the country's name officially to simply Mexico.To go into effect, the bill would have to be passed by both houses of Congress, as well as a majority of Mexico's 31 state legislatures.