Huerta established a harsh military dictatorship. U.S. President Woodrow Wilson became hostile to the Huerta administration, recalled ambassador Henry Lane Wilson and demanded Huerta step aside for democratic elections. In August 1913 Wilson imposed an arms embargo on Mexico, forcing Huerta to turn to Europe and Japan to buy arms. Reflecting the general disenchantment with Huerta's "iron hand" policies, a prominent conservative, Sen. Belisario Domínguez of Chiapas, handed out copies of a speech he did not dare to deliver in the Senate, accusing Huerta of starting the civil war which he was losing, of wanting "to cover the land with corpses . . . rather than abandon power" and called for Congress to impeach Huerta before Mexico was plunged into the abyss. Domínguez knew he was risking his life by speaking out and sent his wife and children out of Mexico before handing out copies of his speech. Domínguez was arrested by two policemen plus Huerta's son and son-in-law, taken to a cemetery where he was "shot while trying to escape" for speaking out against the President. His body was dumped into the grave that his killers had already dug for him. On 10 October 1913, when Congress announced it was opening an investigation of the disappearance of Sen. Domínguez, who had last been seen several days before being forced into a police car, Huerta sent his soldiers in to shut down Congress in session and arrested 110 Senators and Deputies, of whom 74 were charged with high treason and put to work building a bullfighting arena.