He was a candidate for Head of Government of the Federal District on two occasions: in the year 2000, losing to Andrés Manuel López Obrador; and again in 2006, but that time he declined his candidacy in favour of Jesús Ortega as the representative of the group TUCOI ("All United With the Left") against the candidacy of the ultimately successful candidate, Marcelo Ebrard.

He was the leader of his own internal political current within the Party of the Democratic Revolution, Movimiento por la Democracia ("Movement for Democracy").

[3] On 8 November 2021, President Andrés Manuel López Obrador selected him to head the Unidad de Inteligencia Financiera, the country's financial intelligence unit.

Another of his works is México 1988: Disputa por la presidencia y Lucha Parlamentaria, which narrates how the 1988 electoral fraud was consolidated against Cuauhtémoc Cárdenas and how it was debated at the Chamber of Deputies.

In a book derived from his professional thesis, entitled Democracia y crisis política en México, he argues in defense of the fight for the political freedom in the country.