Upon his return to Mexico and the Secretariat in May, he found a situation in which Calles was still attempting to control national politics from behind the scenes. Pascual Ortiz Rubio, Portes Gil's successor, was suspicious of Amaro, as was Calles. Calles, purporting to have received information that Amaro was planning on assassinating him or overthrowing Ortiz Rubio, informed the President of the alleged plot. Ortiz Rubio deferred to Calles to take care of the situation, and the "Jefe Máximo" met with three other cabinet officials, convincing them to resign so as to make it appear that the "cabinet crisis" did not center around Amaro. They agreed, and the following day, Calles, Amaro, and the other three secretarys met at Amaro's estate. There, all four cabinet ministers agreed to resign.