During the presidency of
Raúl Alfonsín, in June 1985, Colombo was appointed as president of the Banco Nacional de Desarrollo (BANADE), in replacement of Mario Brodersohn. Later, Colombo worked in the private sector as part of Gupo Pérez Companc, as a
stockbroker in the
Buenos Aires Stock Exchange, as vice president of the Sociedad de la Bolsa Macro, and as manager of the Banco Río de la Plata (later
Banco Santander Río) stock market. In 1999, upon the election of
Fernando de la Rúa as president of Argentina, Colombo was appointed as president of the
Banco de la Nación Argentina, the country's national bank. Just a year later, on 6 October 2000, De la Rúa appointed Colombo as
Chief of the Cabinet of Ministers, in replacement of
Rodolfo Terragno. Under Colombo's leadership,
Ricardo López Murphy was designated at the helm of the
Ministry of Economy following the resignation of
José Luis Machinea. further charges were presented before the
National Senate in 2002. Colombo remained in the position until De la Rúa's abrupt resignation on 20 December 2001, and was the last public official to leave the
Casa Rosada in the aftermath of the
December 2001 riots. Due to
Senate provisional president (and acting president)
Ramón Puerta being in
San Luis at the time, Colombo managed "security and minimal administrative affairs of the State until the situation was resolved" in the early hours of 21 December. ==Personal life==