Elections at the Buenos Aires Province Teamsters' Union in 1984 resulted in Moyano's promotion as Adjunct Secretary General and in 1987, he was elected Secretary General of the union. A Peronist sweep in the September 1987 mid-term elections sent Moyano to the Argentine Chamber of Deputies (Lower House of Congress) for the Province of Buenos Aires. He stepped down from Congress following his first term in 1991 to assume the Speakership of the National Teamsters' Union, and was elected their Adjunct Secretary General in 1992. He assumed chairmanship of the union's health plan on that occasion and, in April, established the "15 de Diciembre" Teamsters' Mutual Association. Like many in the CGT, he became increasingly distanced from President Carlos Menem, who was elected in 1989 as a Peronist and on a populist platform; but had adopted free-market economics since, and by 1995 presided over an unemployment rate of 18% and stagnant wages. The Teamsters' Union helped lead a series of general strikes in 1996, though under the banner of the "Argentine Workers' Movement" (MTA) - a dissenting, intransigent faction within the CGT. An August 1997 meeting of the Transport Workers' Confederation of the Mercosur Common Market area resulted in Moyano's election as their Secretary General; this was followed by a November 1998 election as Vice President of the Transport Workers' Section for the Latin America Committee of the ITF, in London. Aside from shows of force like the 1996 general strikes, however, the CGT's leadership remained generally conciliatory with the anti-labour Menem for the sake of the Justicialist Party, whose defeats in the October 1997 mid-term elections bode poorly for their chances in 1999 (elections they went on to lose). Moyano's rapproachment with the CGT's pragmatic Secretary General during the late 1990s, Rodolfo Daer, was again strained in the year 2000, when President Fernando de la Rúa's plans to make Argentina's labour laws more flexible led to a new schism within the CGT, and in March, Moyano led the MTA as one of two major breakaway unions. The collapse of de la Rúa's government in late 2001 made way for the parliamentary selection of former Buenos Aires Province Governor Eduardo Duhalde, whose alliance to Moyano helped lead to the gathering of most of the CGT under a trio of Moyano, Susana Rueda of the Nurses' Union and José Luis Lingieri of the Water Works Union; a reunited CGT elected Moyano Secretary General in July 2004.