General Zuloaga announces the Tacubaya plan, which…

General Zuloaga announces the Tacubaya plan, which states that the Constitution ceases to be in effect and that Comonfort will continue to be the president, governing with broad powers; it calls for a special session of Congress to draft a new constitution that would truly reflect the will of the citizens, doing away in the meantime with all those individuals who do not support this plan.

Executions are common, and a number of people flee north to the United States.

The Conservatives pressure Comonfort to repeal the Liberal reforms, which he refuses to do.

On January 11, 1858, Zuloaga demands the resignation of Comonfort, although the two had been friends.

Upon Comonfort's deposition, Juárez, who, by virtue of his status as president of the Supreme Court, is to occupy the Executive in case of the president's absence, claims the presidency, but Zuloaga is in military command of the capital, and Juárez leaves to establish his government in Guanajuato, beginning the counterrevolution known as the War of the Reform.

Zuloaga is elected interim president of the republic on January 21, 1858.

The Mexican states become divided between those that support the Tacubaya Project and those that defend the constitutional order.

Comonfort, repudiated by all parties, leaves the country for asylum in the United States.